I only have a very thin layer of small inert gravel,,, the fish were having trouble catching Moina…were chasing the the reflections off the bottom of the tank.
Do I need thick substrate?? I guess I dont get it yet, with no or little bacteria present, nothing cleans the amonia. Java moss is not a heavey feeder, and I’m trying to keep the tanks simple.
I also do have a small sponge filter bubbler to keep slight water movement in the tanks…and to keep a better gas exchange…but, all seems to be failing.