Do you put anything in the water to supply nutrients for your azolla? I put some in 150 gallon stock tank with some fish, but that one has a pretty healthy recirculating pump and a fountain, I think there was too much current. It all died. Next I tried some in a seed tray with a little bit of potting soil in the bottom, but that one had too much light and turned brown. I thought that stuff was easy to grow but I can’t seem to get the hang of it.