As I have detailed before, my tank is macroalgae specific, and I never plan on adding corals. However, my live rock likely holds plenty of toxic organisms whose excretions could compromise my health, so macroalgae from my system is not going to end up on my plate any time soon. I have not used any pest treatments so far and the additives I use are listed on my build thread (post #87).If it were a macro algae specific tank, no corals, and no chemicals used, it'd be okay. Hydroponics have been around for a long time. But when you start adding all of our treatments for pests, and risked toxins mentioned above when certain coral species are added, not worth the risk.