I have root aphids (not the problem). As part of my solution to the aphids I am using Azamax in my res. -20 gal H20 res (home depot cement mixing tub) -res temp aqua chilled to 65f -1x 240gph powerhead to ciruclate water -8 plants in a So I just flipped my reservoir and it only has H20 and Azamax at a .01% (half of the lowest recommended dosage for a hydroponics application of this size). I do pump tons of air into the res and that is what's causing the foam/mass tiny bubbles. When I shut the AIR pumps off, the foam disappears within minutes. I don't want to keep the pumps turned off, roots love that oxygen. The foam is causing some of my roots to float on top of it and within it, which I don't like. My questions: 1. Will this foam stop? 2. Should I immediately add my nute line up back into the rez? 3. Or should I let the H20 and Azamax circulate around? If I let it circulate, then for how long? 4. Can I leave the Azamax in there until I flip the res again in two weeks?