the discus mix.
I had a bit of a crisis last night after cleaning my canister filter (which ive always hated btw) for some reason all the stuff inside the tubes broke loose and started blowing into my tank. It took me about 2 hours to realize that was where it was coming from. At first I just thought it was loose stuff blowing off of the sponge that wraps around the canister holding the media so I threw that away and put on a new one. I ended up disassembling my entire filter and cleaning out the tubes, so much #### came out it was disgusting. I noticed during my water change that water was barly trickling out of it. It had been months since i cleaned it. Anyway, I ended up doing two more 50% water changes in the middle of the night to get rid of all of the crap and then I noticed all of my discus laying on the bottom of the tank so I did another water change. Today they seem better but still a bit stressed.