How much do you need to add in say 8 gallons in a 18 gallon container and i heard this will kill some of the good nutes is this true or not?Add H2O2 to your tank, and it can act as a buffer if tempuratures go a little higher then wanted, plus it adds algae protection to your system.
Yep, the mate is right, nothing with 'alive' stuff in itdo not use h202, unless you know for sure that your nutrients are 100% chemical, h202 will kill off bacteria in organic nutes. As with Canna nutes, it sepecifically says not to use with H202