PK Booster Compost Tea 8kg

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Highly Concentrated Combination Compost

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A rich soil life is of great importance for the organic cultivation of plants. Bacteria, fungi and other microorganisms break down organic matter and convert it into nutrients for plants. The larger and more diverse the range of bacteria and fungi in the soil or the potting soil, the better the plants will grow. This has a direct impact on the health of plants and their yield

BioTabs PK Booster is a rich and powerful compost, with a healthy mixture of active micro-organisms (bacteria-dominant), bat guano, kelp and a few other selected ingredients. In addition, the 100% organic package contains a unique mixture of bacteria which create phosphorous (P), and mobilize Potassium (K). These bacteria give your plants a large dose of phosphorus (P) and potassium (K), a true PK boost!! All these ingredients, ready blended to perfection, provide growers with a fantastic base for Compost Tea, especially for fast-growing annuals.

Compost Tea is a aerated mixture of chlorine-free water at room temperature and compost. Compost tea considerably enriches the soil life and is therefore an important tool for organic growers. Compost tea is aerated for 24 to 36 hours. You can add extra ingredients to the tea during the aeration phase. The aeration increases the micro-organisms in the fluid.

The addition of Orgatrex as nutrition for bacteria along with aeration process can create an explosive multiplication of the micro-organisms in the compost tea.

A major advantage of BioTabs Compost Tea is that it offers the possibility to make both small quantities (from 1 litre), as well as larger quantities (hundreds of litres) as and when required.

Brewing system: Compost tea brewing systems are sold in specialized stores but are easily improvised with a bucket, a hose, an aeration stone and an aquarium pump. For larger quantities, use a barrel, a (garden) hose with pricked holes and a powerful pump.

The purpose of this installation is to actively pump air into the mixture. Make sure the pump you are using is strong enough to truly get the tea bubbling. You can check for yourself whether your pump is powerful enough. If the tea starts to stink the pump is not powerful enough. Well aerated compost tea smells fresh and pleasant.

Clean the compost brewer well after use. Do not use chlorine, but a solution with 3% hydrogen peroxide, or another cleaning agent.

Preparation of the tea: Make the compost tea according to the instructions just before use. Aerate the mixture for 24-36 hours. The tea only has a shelf life of a few hours (up to four hours). Use the tea within 4 hours after ceasing aeration. Use only good quality water, without chlorine. Chlorine kills micro-organisms. If you only have water with chlorine at your disposal, you will have to pre-aerate the water for several hours. The active aeration of the water causes the chlorine to evaporate. Only add compost tea ingredients around 2 hours after pre-aeration.

Your tea will be much more effective if you add 1 teaspoon (per 5 litres of tea) of Mycotrex (mycorrhiza fungi) half an hour before you stop brewing. Mycotrex sold separately.


IMPORTANT – Do not attempt to feed in solution via the reservoir when using with AutoPot Watering Systems – this will potentially block pipework.

Apply via hand watering ONLY

Turn off your AutoPot Watering System 24hrs before each application.

Leave your AutoPot Watering System switched off for 24hrs after each application

Compost tea can be used for both indoor and outdoor cultivation. You can use the mixture by pouring it on the soil. Try to keep the compost tea in motion while pouring. There is no need to filter solids as you cannot overdose compost tea.

The more often you use it, the better your results will be. We encourage you to use our PK Booster Compost Tea at least three times during a cycle. Do this at least during week 3, 4 and 5 of flowering.

You can also spray the Compost Tea on the leaves. The Compost Tea will then form a protective layer on the leaves. Hostile fungi will therefore not have a chance to cause damage. If applying via spray filter the tea before use to prevent the sprayer from becoming clogged.

If spraying only use a hand pump as the tea contains many live micro-organisms which cannot survive being sprayed under high pressure.

Spray the top and the bottom of the leaves. And preferably do so just before the lights go out or the sun goes down.

Add per litre of water (chlorine-free and at room temperature): 1 tablespoon (15 gr.) of the PK BOOSTER COMPOST TEE mixture and 5ml of ORGATREX Leave to bubble for 24-36 hours. Pour the tea on the soil within 4 hours after the tea is ready. Use half a litre of tea per plant.


Keep out of reach of children. Not suitable for human consumption. Store in a COOL, dry place

This product contains living matter and may be affected by mould. This has NO effect on quality.

Does not include: an Aeration pump and Orgatrex.