ok so i just said screw it and called up a.n to ask them. they said the only products that arent compatible are the beneficials with live organisms in it which is tarantula, parahna, voodoo juice and sensizyme. i just always hear mixed things on this subject thats why i started a thread. albfuct said in another thread that hygrozyme is not compatible with h202 but theres nothing alive in hygrozyme and it even says on the bottle that it is compatible. i think al is wrong on this subject from the info ive gathered