Has anyone in here ever used that hydro-fungicide? Looks like a damn amazing product!
Just to give a different view, From the DM website
On the other hand, I've used 3%, bottles at a time, and even sprayed it directly on the roots many times when fighting disease, without obvious ill effects. I find it is nice to use with a sterilizing agent to keep things nice and clean. However, some DWC people find keeping a sterile res is impossible, in which case you have to use bennies, which makes h202 a bad idea.