Quote Originally Posted by basementbotany
how much H2O2 are you adding to your 25 gal. res? thought about adding a little to my 15 gal. res. but unsure on the amount. have you seen any benefits adding peroxide? what benefits? i run e&F, would it be beneficial in this kind of system?
Generally, 3-5ml per gallon if you're using the 35% H2O2. If you're using the 3% store-bought (used for cleaning wounds and what not), multiply by 10, so about 30-50ml per gallon.

Hydrogen peroxide is great for a lot of stuff. Be sure that you're not using any nutrients or additives that contain beneficial anaerobic bacteria, or they'll die.