PRFCT Tips

Ready to Brew Some Compost Tea?

June 30, 2016

You can buy a compost tea brewing system or make your own at home. Whichever system you use, you will need a heavy-duty pump to aerate the water sufficiently. Proper aeration encourages beneficial microbes to multiply and discourages harmful microbes from growing in your tea. A fish aquarium bubbler will not be strong enough.

1. Start with great compost. Blending two or three composts together will give you a great variety of beneficial microbes. Put your compost in a mesh strainer bag (you can find them at the local hardware store in the paint section).

2. Fill your brewer with water and run the pump for 20 minutes to de-gas any chlorine.

compost tea brewer

3. Put your compost bag in the water while the brewer is running. Hang the bag from the edge of the bucket to expose as much of the compost as possible to the bubbling water.

4. Check the color of the water to make sure it is getting significantly darker, which indicates that microbes are being extracted from the compost.

compost tea brewer

5. Add food to feed the microbes. Suggested foods include molasses, kelp, humic acid, and fish emulsion.

6. Brew for 24 hours.

compost tea brewer

7. Decant your tea and use within six hours. Mix two parts water with one part compost tea and apply using a watering can or sprayer.

8. Clean your brewer immediately.

9. Brew more tea!