Did you even bother to read the suggestions folks offered you from the last time you posted this exact question? They also asked you for more information, and you failed to provide it. I know many here are very good, but I have yet to find anyone on here that reads minds. If you keep it all in one thread you will be able to get better assistance.

pH ?
PPM of nute solution ?
Nutes you are using?
What type of DWC, single buckets, buckets with central controller, tub, what ?
Rez temp ?
Is light getting to the roots ?
How often changing rez ?
ANy pics ?

Hell, to keep rez kewl is simple. Freeze milk jugs with water in em and toss in rez. Or you can go all out and spend 600 bucks on a chiller.

I told you last time you posted that you did not want to use h202 and Hydrogaurd together. The h202 will kill the bacteria in the Hydrogaurd making it useless.


b0nger