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Why You Should Keep Your Cannabis Grow Room Clean

It won’t matter how well you control your water, nutrients, and humidity if everything is dirty. You’ll have problems that you won’t even understand. Let’s go through how to solve these.

One of the main points of having an indoor grow room is to control every aspect of your plant’s environment. If you don’t keep the environment clean, you won’t have much control over it. Let’s go through why this is important.

WHY IT’S IMPORTANT TO KEEP EVERYTHING CLEAN

It should be obvious that with low hygiene comes greater chances of disease and pests appearing in your grow room. If you keep it clean, it won’t be an attractive environment for bugs, spiders, or mites. These can absolutely destroy your plants. And chances are, they’ll still be there for your next batch of seeds. They’ll survive under the hardest conditions once they’ve found a home they like. Even if you clean between plants, this won’t be enough to keep them out.

Another important consequence of not cleaning your operation is extra maintenance. Allowing dust to accumulate on surfaces and water to form puddles on the floor will not serve you. You’ll simply be faced with ruined ventilation systems and rotting flooring material. It’s worth the effort, even if just for the money you save. Not to mention how much your plants will thank you.

CLEANING BEFORE YOU GROW PLANTS

Even if you’re taking products directly out of the box, it’s still important to make sure everything is clean and sterile before you place your plants inside the grow room. Bleach is a good option, but don’t overdo it. A teaspoon or so for every three litres of water will be plenty. There are even some organic bleach products that you may prefer. Use this on the surfaces of your tent/room and your vents. The last thing you want is the ventilation system releasing impurities onto your plants. Once this is done, let it dry before bringing your plants into the room.

If you’re switching from one grow to the next, make sure to also wash your pots and materials. You don’t want organic matter to be left behind and develop into fungi in your new grow.

Once that’s done, you’ll be ready for welcoming your plants into the room. Make sure you’re clean when you enter as well. We’re not saying you need to shower every time you go in, but it surely wouldn’t hurt. At least change your clothes and cover your shoes. You can always just wear clean socks.

This will be the first step to keeping your operation as clean as possible. Which leads us to our next section.

Clean Fan Ventilation System

HOW TO MAINTAIN A CLEAN GROW ROOM

One of the first things you should be on the lookout for is dead plant matter. Whether on the floor or still attached to the plant, if you see a dead leaf, remove it, and throw it out. The decomposition of this will always attract unwanted guests. Another way you can help prevent this is by pruning. Besides helping your plant focus its nutrients on the good stuff, pruning will remove the problem before any damage is done.

And don’t store any organic dead matter inside. Always take it out and throw it away. If you don’t remove it from the room, it would be as if you had done nothing. Also, clean your under-trays frequently. If you’re not using them, get some. They help keep everything clean and dry.

Keep your water supply clean. This is many times overlooked with the absurd notion that water doesn’t get dirty. It does. In the same way you must wash your bathtub every once in a while, you have to wash your water tank and pipes. Sanitise all surfaces your water comes into contact with. You’ll be directly feeding this to your plants, so you need to be sure of what’s in it.

Buy intake filters. These will help filter the air that comes into your grow room. It will be another step to prevent unwanted pests from entering your facilities through the ventilation system, which they very commonly do.

Another aspect that is too many times forgotten is maintaining clean bulbs and reflectors. These objects sit still throughout the entire process. They will accumulate dust very easily. Make sure you remove these once every month or so and clean them thoroughly.

Cleaning Bulbs And Reflectors Growroom Cannabis

BEYOND CLEANING: THE GROW ROOM STERILIZATION

A deep cleaning by sweeping and using a vacuum cleaner provides a good scrub of your grow room, assuming you carefully remove all the debris, leaves and anything visible from the floor, the walls and the devices in the growing space. This way most of the insects’ eggs, microorganisms, and other pathogens should disappear from your room, but not all of them. A complete removal of all microbial life, including fungi, bacteria, spores, viruses and any other pathogens requires a sterilization process, which usually calls for chemical cleaners. A regular sterilization practice is particularly recommended for hydroponic systems, planting pots and cloning areas.

Two common chemical sterilizers used in horticulture are bleach and hydrogen peroxide. Both of them can be sprayed all over the growing space with a manual pump sprayer. Be sure to cover all the surfaces and wipe out the excess liquid after a while.

  • BLEACH

Bleach leaves a residual that should be carefully rinsed with water to avoid a contact with the plants or soil. It could damage some delicate materials, and its fumes can irritate your lungs and eyes, so take care when using this sterilizer.

  • HYDROGEN PEROXIDE

Hydrogen peroxide works very well against any pathogens, and chemically turns into water and oxygen after exerting its sterilizing effect. This is very convenient for the grower as there is no toxic substance potentially contaminating the plants or the growing medium. You can spray it all around the grow room, and also use it on a rag to sterilize reservoirs, cloning devices, fans, lights, all the components of hydroponic systems, and any other potentially contaminated place or device.

After a deep cleaning, a sterilization practice at the end of every harvest with bleach or hydrogen peroxide is a good insurance no pathogens will proliferate when you start the next crop. Always remember that both bleach and hydrogen peroxide can cause chemical burns. When you use a chemical sterilizer it is always a good idea to protect your lungs and your skin, wearing gloves, masks and goggles.

ORGANISATION

A final aspect that will help you keep your space spotless is the way you organise it. If you assemble everything properly and neatly, you’ll have an easier job cleaning everything.

Keep your pots well-organized and accessible. Everything needs to be reached easily to clean spills and remove dead plant matter. You should also wall-mount as much equipment as you can. Absolutely do this with fans and ventilation systems, but you can do it for tools too. Uncluttered surfaces are far easier to clean and your tools will always be within reach.

The only other thing you’ll need is the proper mindset and motivation. Once you believe that your yield’s quality will be superior when cared for properly, then you’ll take the effort to go that extra step. Good luck with your operation.

Having a dirty grow room can bring serious issues to your crop. Make sure you know how you can avoid them by keeping your facilities clean!

How to Professionally Germinate Cannabis Seeds: Award-Winning Seed Breeder’s Step by Step Instructions

Popped cannabis seeds by Purple Caper Seeds . Photo by Lizzy Cozzi .

Popped cannabis seeds by Purple Caper Seeds. Photo by Lizzy Cozzi.

Cannabis germination: Otherwise known as “popping seeds”

Germination is the process by which a new plant grows from a seed. The process of moving from seed to seedling is sometimes referred to in growing vernacular as “popping” seeds or beans.

A grower’s germination rates (the % of seeds that yield a viable plant) vary based on a number of factors—these include:

The quality of the cannabis seeds

The conditions under which the cannabis seeds have been stored

The process the grower uses to pop their seeds (Perhaps most important and often overlooked factor!)

Why is the process a cannabis grower uses to germinate their seeds so important?

Money and time.

Cannabis seeds aren’t cheap. Higher germination rates save growers money and time. The process a grower uses to germinate can have as much of an impact on their success rate as the seeds themselves.

To prove this, Frank from Purple Caper Seeds, an award-winning cannabis genetics breeder for over 25 years, gave us a tour of his cannabis genetics facility and showed us his unique method of popping seeds.

Purple Caper’s genetics can be found in the clones you find in major west coast dispensaries. Recently, Purple Caper’s 4G, was selected as “a Cola of the Month” by High Times.

This guy knows what he’s talking about.

Having just had an embarrassingly low germination rate with some 10-year old cannabis seeds of our own, we were anxious to learn what we could have done differently.

Here’s Frank’s step-by-step process for how to germinate cannabis seeds and maximize your germination rates

Frank completely sterilizes his hands with alcohol before working with any of the materials in the cannabis germination process. Purple Caper Seeds photo by Lizzy Cozzi .

Frank completely sterilizes his hands with alcohol before working with any of the materials in the cannabis germination process. Purple Caper Seeds photo by Lizzy Cozzi.

Begin with a sterile environment and a methodical process

As anyone who has ever spoken to a group of cannabis growers knows, any process concerning this plant can be as simple or complex as the grower makes it.

This method is a simplified technique, with the home grower in mind.

The bar we’re setting here is not unreasonably high, but if you’ve been germinating on the fly and in paper towels, this 12-step process will require more preparation and individual steps than you’re used to.

Trust us; it’s worth it!

With this in mind, lets first go over same basic housekeeping and best practices. Before beginning to work, be prepared to:

Sterilize everything you are planning to work with, except for the paper towels.

Prepare everything you will need BEFORE you start.

Work quickly but accurately. The faster you work the less chance pathogens such as gray, blue, black and white molds will affect your seeds.

Keep your work area clean and organized.

You want to create as close to a clean room as you can get:

Purple Caper Seeds’ genetics facility has six air purifiers, and Frank does all his cannabis seed germination work in a sterile room with a laminar hood.

We’re going to assume not everybody has access to this kind of a setup. So as a stand-in practice, Frank recommends bleaching your bathroom clean and bringing in an air purifier.

Do your best to create a clean room. We used a kitchen island disinfected with 91% alcohol.

Materials needed to germinate marijuana seeds effectively. Purple Caper Seeds photo by Lizzy Cozzi .

Materials needed to germinate marijuana seeds effectively. Purple Caper Seeds photo by Lizzy Cozzi.

The materials you’ll need to pop seeds:

A gallon or more of distilled water.

Peroxide 3% solution.

Nutrient Solution—We’ll describe how to make this in the steps that follow.

Cal (Calcium) Mag (Magnesium) supplement – Frank recommends Cal-Mag Plus by Botanicare.

General Hydroponic Flora Microbe Series. This series comes in 3 bottles: Grow, Bloom and Micro.

PH Up or PH Down by General Hydroponics.

Organic agave extract.

Test Tubes—Frank recommends laboratory quality glass. Cheap test tubes will break when you sterilize them. While all of these materials can be purchased at Home Depot it is possible to buy a quality tissue culture kit for under $150, thus saving yourself a lot of running around.. Microclone.com – produces good basic kit.

Push Rod—Chopsticks work well.

Yeast tube Caps – Available at Home Depot.

Feeding Tube—Available at Home Depot.

Coco Coir (prewashed and charged)—Coco Coir is a natural fiber extracted from the husk of coconut. Often used as a soil amendment it adds organic matter, aerates the soil and improves water holding capacity near the root zone.

Small plastic cups with lids.

Liquid waste container.

Aluminum foil precut to size—You’ll use these to wrap the tubes.

Plastic tube holder.

Sterile plastic pipette—Make sure to open the plastic bag of pipettes only when you are ready to use them.

How to germinate cannabis seeds in 12 easy steps

A cannabis seed soaking in distilled water. Purple Caper Seeds photo by Lizzy Cozzi .

A cannabis seed soaking in distilled water. Purple Caper Seeds photo by Lizzy Cozzi.

Step 1:

Clean the seeds and soak in distilled water for 48 hours

Bring a gallon or more of distilled water to a complete rolling boil. You’ll use this sterile water in several steps in this process. (Contrary to what many believe distilled water is not sterile.)

Remove excess dirt from the seeds, cover them with the water and leave them to soak.

Step 2:

Make your nutrient solution

Start with a ¾ gallon of sterile, distilled water.

Add 2 ml organic agave extract into the distilled water when it is still hot. Let it dissolve and cool.

Add 2 ml Cal (Calcium) Mag (Magnesium) supplement – Frank recommends Cal-Mag Plus by Botanicare

Add General Hydroponic Flora Microbe Series. This series comes in 3 bottles: Grow, Bloom and Micro. Add 1ml of EACH to your solution.

Use your PH meter to test the solution. The PH should be as close to 6.0 as possible. If the solution is too acidic or basic adjust with PH Up or PH Down by General Hydroponics.

Put the solution back in the distilled water container for easy transport to your clean room.

Step 3

Soak your seed in the nutrient solution for 48 hours

Cover the seeds with the solution. Small, sterile plastic cups with lids are effective for this; they are easy to re-sterilize and reuse.

Once the seeds have sat in the nutrient solution for 48 hours, it’s time to move into the next phase of prep.

Step 4

Prep your tools

Sterilize the test tubes, yeast caps, feeding tube, push rod and the coco coir.

You can sterilize your equipment in two ways:

A simple, and often overlooked way to sterilize materials in your home is with the help of a pressure cooker.

If you don’t have a pressure cooker, submerging the equipment in boiling water is another sterilization technique. Sterilizing with boiling water works for all material except the coco coir, which becomes hard to work with when saturated with water. Coco coir is pre-washed but not sterilized. Frank recommends sterilizing the coco coir by pressure cooker, if possible.

When using a pressure cooker, begin with the coco coir. Put some coco coir in a petri dish and place it inside the pressure cooker.

Start the pressure cooker. As soon as it reaches its max temperature, release the pressure. Open the cooker in your clean area to minimize contamination.

Sterilize the other tools in the same way.

Store all tools in a clean environment.

Step 5:

Prep yourself

Use a healthy dose of iso alcohol 91% and clean your hands. Take your time with this. Frank does not use gloves because he feels it gives him a better feel for working with the seeds.

To further minimize contamination, it is recommended you wear a surgical mask while you work.

Alcohol and distilled water are necessary for cannabis seeds germination. Purple Caper Seeds . Photo by Lizzy Cozzi .

Alcohol and distilled water are necessary for cannabis seeds germination. Purple Caper Seeds. Photo by Lizzy Cozzi.

Step 6:

Prep your work area

Begin by cleaning all surfaces with the 91% iso alcohol. Keep in mind it takes about 20 seconds for alcohol to do its job so don’t assume all surfaces are immediately sterile after you wipe them clean.

Set up all the tools you need.

Wipe down the top and sides of the nutrient solution bottle with the iso alcohol.

Step 7:

Sterilize, sterilize, sterilize

Dip the test tube, the yeast cap, and pushrod in a solution of 3% peroxide.

Let the peroxide sit in the yeast tube for several minutes.

Discard the peroxide into the waste container and then flush and/or clean all items with the nutrient solution.

Sterilize everything you touch and use while you germinate your cannabis seeds. Purple Caper Seeds photo by Lizzy Cozzi .

Sterilize everything you touch and use while you germinate your cannabis seeds. Purple Caper Seeds photo by Lizzy Cozzi.

Step 8:

Create the Coco-Plug

Take a pinch of coco coir and load it into a feeding tube. In this case, the feeding tube is used to keep the walls of the test tube clean when depositing the coir.

Put the contents of the feeding tube into the test tube.

Push the coco into the test tube with the push rod.

Remove the feeding tube and rod leaving approximately ½” of coco at the bottom of the test tube.

Coco plugs inserted it into the feeding tube for Purple Caper Seeds cannabis germination. Photo by Lizzy Cozzi .

Coco plugs inserted it into the feeding tube for Purple Caper Seeds cannabis germination. Photo by Lizzy Cozzi.

Step 9:

Soak the seeds in peroxide

Using tweezers, pick up a seed from the nutrient solution where it has been soaking for the last 48 hours. If using plastic cups with lids, open and close the lid before and after you remove the seeds.

Drop the seed into the 3% peroxide solution.

Soak for 15 seconds, NOT longer. The peroxide will damage the seed if you soak it for much more than 15 seconds.

After removing it, clean the seed with the nutrient solution or with distilled water to neutralize the peroxide.

Step 10:

Prepare test tube

Using tweezers, drop the seed into the test tube. Ideally it should sit in the middle of the coco but it need not be perfectly centered; the seedling will grow against the glass.

Cap the tube with a yeast cap.

Open the bag containing the sterile pipettes . Remove the yeast cap and add 2 ml of nutrient solution to the test tube with the seed in it.

Seal the tube again with yeast cap. Don’t close it all the way. Yeast tube caps control airflow. If you don’t push the cap all the way down it will allow for a little external airflow. Yeast caps are made to burp. By not fully pushing down the cap you are allowing only about 1/64th of an inch of airflow, thus risking some contamination. But Frank swears by this process. He explained to us that the process still works when the yeast cap is fully sealed, but in his experience, the seedlings seem happier when a little airflow is allowed.

Ready to germinate cannabis seedlings: capped test tubes filled with seeds and coco coir. Purple Caper Seeds photo by Lizzy Cozzi .

Ready to germinate cannabis seedlings: capped test tubes filled with seeds and coco coir. Purple Caper Seeds photo by Lizzy Cozzi.

Step 11:

Wrap the capped test tube

Wrap the test tube with a single layer of aluminum foil. Seedlings typically grow towards the light source. The goal here is to control the light, encouraging the seedling to grow north/south.

Stack the sealed tubes in your tube holder.

Continue until all seeds are used and all test tubes are placed in the holder.

Wrapping the test tubes in aluminum foil encourages the cannabis seedling to grow toward the light. This makes transplanting cannabis seedling easier. Purple Caper Seeds photo by Lizzy Cozzi .

Wrapping the test tubes in aluminum foil encourages the cannabis seedling to grow toward the light. This makes transplanting cannabis seedling easier. Purple Caper Seeds photo by Lizzy Cozzi.

Step 12:

Place the seedlings under a light source

Place under a florescent light in a 78F environment.

Check every other day on the progress

Close up of a newly sprouted cannabis seedling. Purple Caper Seeds photo by Lizzy Cozzi .

Close up of a newly sprouted cannabis seedling. Purple Caper Seeds photo by Lizzy Cozzi.

Don’t transplant the seeds immediately after germination. The optimum height for transplanting is about 1” in height, so use 1” as a guide. Ideally you don’t want to transplant too early or too late.

When the roots have generously filled the coco-plug, it’s time to transplant.

Part II: Transplanting your germinated seeds to soil

Beginning the process of transplanting cannabis seed into the coco coir. Purple Caper Seeds photo by Lizzy Cozzi .

Beginning the process of transplanting cannabis seed into the coco coir. Purple Caper Seeds photo by Lizzy Cozzi.

Once the seeds pop, it is time to transition them into a starter growing medium.

The materials you’ll need to transplant your seeds:

Root Riot cubes

Plastic containers—Root Riot cubes come with a 50 plug holding tray that works well.

Step 1

Remove the Seedlings

When the seedlings are ready, use tweezers to remove them. Ideally grab the coco substrate or root ball so as not to damage the seedling.

Moving the cannabis seedling to the rooting cubes. Purple Caper Seeds photo by Lizzy Cozzi .

Moving the cannabis seedling to the rooting cubes. Purple Caper Seeds photo by Lizzy Cozzi.

Step 2

Create a Rooting Environment

Frank uses Root Riot cubes to start the seedlings. Break the cubes in half.

Place the seedling roots on one half of the Root Riot cube.

Place the other half of the cube top of the roots to create a “sandwich.” Put the rooting cube in a plastic container or holding tray.

Add 2 ml nutrient solution to the cube using a pipette.

Placing the cannabis seedling in the rooting cube. Purple Caper Seeds photo by Lizzy Cozzi .

Placing the cannabis seedling in the rooting cube. Purple Caper Seeds photo by Lizzy Cozzi.

Step 3

Move the Cubes into a Wet Environment.

Put the plastic container in a plastic tray.

Add a ¼ inch of water to the tray.

Top off the tray with approximately ¼” water on top of each cube. This ensures the seedlings won’t dry out.

The cannabis seedling and rooting cube are placed in the tray. Purple Caper Seeds photo by Lizzy Cozzi .

The cannabis seedling and rooting cube are placed in the tray. Purple Caper Seeds photo by Lizzy Cozzi.

Voila! You’ve successfully germinated in test tubes and transplanted. Your seedlings will need some time to recover from the transplant, but when they are robust enough, they’re ready to move to a larger container.

We think you’ll find this process, while slightly more effortful than casual germination methods, will yield higher germination rates and more robust seedlings.

Once you’ve done it a few times, perfecting your timing and experimenting with the gear and sterilization methods that are right for you, it’s a process that can be done often and with relative ease.

Popped cannabis seeds by Purple Caper Seeds . Photo by Lizzy Cozzi .

Popped cannabis seeds by Purple Caper Seeds. Photo by Lizzy Cozzi.

Improve your germination rate by following Frank from Purple Caper Seeds’ step by step process for popping seeds in coir and transplanting seeds to soil after germination.