Well I'm not finding much. Zero-tol and Oxidate are the two main organic cleaners. There are others like physan20 but not organic.

The real problem is the cyanobacteria or blue green algea or red algea is good and bad. It coloninizes on the roots and looks like root rot. All attemps to cure root rot fails or gets worse. It is killing the roots by choking them off with slime. Most of the time the good keeps the bad in check. Chlorine and hydrogen peroxide will not kill it.

I know large hydro farms must run something in the systems to keep them clean but try ang find it. Maybe they don't want me to know what I'm eating ?

So I will go with the physan clean out to kill the cyanobacteria and then the bene's with Great White and see what happens.

I will start another thread to show results.

The maid can be a looker but that won't keep it clean long. LOL
maybe a redhead with huge tracts of land. LOL