This product is one of our aquaponic supplies that is specially formulated to treat re-circulated aquaculture water. Use 1 teaspoon of this beneficial bacteria aquarium product for 100 gallons of water. Add beneficial bacteria for aquarium systems or aquaponics reservoirs once a month, or as needed as water changes. Be sure to check the filters regularly when using aquaponics bacteria. Keep testing the pH as the microbial tends to lower the reading. Use baking soda to slowly increase pH.