This is been persistent for a few weeks. I suck up small chunks and it goes away for a few days then slowly creeps back. Today I got home from work and the filter was off (aquaclear, and power went off and back on) and it spread quite a bit, enough to worry me enough to make a post. Is this something I should remove the fish for because its dangerous? How do I treat it? So far the tank is healthy and since its presence I've only lost 1 Amano Shrimp, so I can't really say its bad, but I have no idea what it is.
Also, I've had this same thing in 2 of my other tanks as well, but it eventually went away with the method I described earlier.
To give as much info as possible, 7 gal cube, injecting co2, on an hour before lights, off an hour before lights go off.
Inhabitants include 2 amanos, 10 CPDs, and 3 young L397 plecos, lots of plants
ph-7.2
nitrates-15ppm
nitrites-0
ammonia-0
gh/kh-150ppm/50ppm
temp-75*
