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Compost Tea

Easy-to-Brew Microbial Inoculant


OTO Compost Tea brews are the most user-friendly compost tea brew on the market today. Not only are they easy to use, but they are also the most cost-effective method of brewing high-quality compost tea. Compost Tea has a unique, two-part system that keeps the product stable until the time of use. The Tea Brew pouch contains the compost material and the microbe food pack provides a food source designed to multiply microbes during the brewing process. Our special blend of organic matter has been shown to break down nutrients and make them available to your plants as well as increase the microbial population in the rhizosphere. 


Earth Worm Castings


Plant Compost


Soluble Sea Kelp

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Guaranteed Analysis

Tea Brew Pouch

Total Nitrogen (N) ....................................................... 0.92 %

     0.92% Water Insoluble Nitrogen

Available Phosphates (P2O5) .................................... 0.19 %

Soluble Potash (K2O) ................................................. 1.00 %

Plant Nutrients Derived From: Earthworm castings, compost, humus, rock dust, and kelp.

Also Contains Non-Plant Food Ingredients(s):

9.60% Humic acid derived from Leonardite

Plant-Microbe Food Pack

Also Contains Non-Plant Food Ingredients(s):

100% Kelp (Ascophylum  nodosum) (microbe food)

     • Beneficial Living Biology 

     • Organic Grow & Bloom Enhancer 

     • Increases Nutrient Accessibility

     • Helps Revitalizes Soil by Building Microbial Population

     • Easy 2-step Compost Tea Brewing Kit

     • Great for Vegetables, Fruits, Herbs & Flowers 

Rebuilding Your Soils Microbial Population


In every square inch of soil, there are billions of active microbes that make up a complex community of organisms living in and around the roots of plants. The soil food web is a series of conversions of energy and nutrients between microbes. When organism decomposes complex materials, or consume other organisms, the nutrients are converted and are made available to plants and to other soil organisms. High amounts of liquid and synthetic fertilizers can be detrimental to living organisms when applied to your soil.  Reintroducing living microbes found in compost can help rebuild your soil's food web.


Compost Tea brews are easy to use, quick, effective means of adding life back into your soil. It can be applied as an instant extractor as a brewed compost tea in an aerated brewer. Simply pour the brewed tea around the base of the plant once a week. The microbes around the root zone begin rapidly breaking down nutrients into a form your plant can use right away. With more nutrients and minerals available, your plants can grow stronger and faster!

1. Before use make sure your compost tea brewer is clean.

2. Fill brewer with fresh, filtered water. We recommend using a Hydrologic Reverse Osmosis system to remove any chlorine and chloramines from water supply. Maintaining temperatures between 60 - 70 F (16-21 C) throughout the brewing process is ideal.  


Place nylon Tea Brew pouch in water intact, tear open Plant Microbe Food Pack (paper packet), and add contents,\.

          3 - 5 gal water: 1 (80 g) Tea Brew pouch + contents of 1 Plant Microbe Food Pack.

          15 gal water: 3 (80 g) Tea Brew pouch + contents of 3 Plant Microbe Food Pack.

*Keep solution well oxygenated with air stones and allow to brew for 24- 48 hours. Only a portion of the nutrients contained in the Tea Brew Pouch 0.92-0.19-1 will be transferred to the compost tea. To increase utilization of the nutrients, you may apply the contents of the pouch to the application area.


In a bucket with 3- 5 gallons of water: add 1 (80 g) Tea Brew pouch intact. Squeeze and rapidly massage Tea Brews pouch for 60 - 90 seconds, helping to seep material into water. (Waterproof gloves recommended when handling material in water). Add contents of 1 Plant Microbe Food Pak and stir solution until well mixed. Apply immediately.



Pour tea (standard brew or quick brew) full strength around the base of each plant. Follow with a thorough watering.

    Rate:  1 - 3 gal container ........ 1 - 2 cups

                5 - 7 gal container ........ 3 - 4 cups

                10 - 20 gal container ... 5 - 8 cups

                25 - 50 gal container ... 1/2 - 1 gal

                100 gal container .......... 2 - 3 gal

      Compost Tea Brews may be diluted. Max dilution 1:10 (1 gal of tea for every 10 gal of water).


Use tea 24 hours before changing reservoir. Running tea in a hydroponic system for prolonged periods is not recommended. Add brewer tea at the rate of 1-2 gallons for every 10 gallons of nutrient solution. Use tea weekly through growing season including the final week prior to harvest. 


All residue from brewing should be washed off and the brewer should be disinfected. Use antibacterial soap, bleach (2%), or hydrogen peroxide. Rinse brewer thoroughly after disinfecting. 


24-48 Hour Brew:

Quick Brew:


Hydroponic Systems:

Cleaning Tea Brewer:

Compost Tea Brew Instructions & Applications

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