I have a 100 gallon Rubbermaid stock tank on my front porch, filtered with a Rena xP canister filter. The filter output is arranged so that a strong stream of water comes out parallel to the surface, about an inch above the water. My fish love this and spend the whole day playing salmon swimming up the stream, swimming against the current and leaping into the filter output. It is very cute.
I thought I had my water level low enough (about 8 inches below the lip of that tank), but apparently not. Today when I got home my favorite, most enthusiastic comet was laying on the ground. He was all covered with dirt and his skin was very dry. I thought for sure that there was no hope. When I went to pick him up, I saw that his gills were moving. I ran for a bowl, filled it with tank water, and put him in there with a bubble wand. I used my fingers to gently brush the dirt and rocks off his body, especially around the gills. He is actually swimming around now!
What now?! I am sure his slime coat is totally wrecked and that now he is vulnerable to infection. I am sure he is also majorly stressed. So I figure pristine water and lots of aeration, but what else? Can he go back into the tank with his friends, or should he be isolated?