Hey guys, like the title says, my MTS are going up the glass, and 1 of them is actually above the water line. 2 of them are eating algae, no biggie, but another went up to the surface and just chilled there for a while before going back down. Usually when snails do that its a sign of bad water quality, but I just did a water change in the morning, 25%, along with a gravel vac. Couldn't get everything on the sand, but did get a decent amount. Ammonia and nitrite are at 0 ppm, with nitrate hovering between 10-30 ppm. The water is slightly cloudy even after the water change. Any ideas?