Iím not really sure what is going on I have two black angelfish that both look like they are almost losing their slime coat if that makes sense. Attachment 1
These two white angelfish will only come to the top to eat otherwise just stay in the corner with pinned fins.
Nitrate ammonia nitrite 0/0/0
I recently had a heater malfunction and my tank dropped from 81 to 72 degrees overnight a couple nights ago.
If anyone has suggestions that would be great. Have any questions let me know.
Tank is now at 81 degrees