Ok sorry everyone. I typed out the last few posts on my iPhone so it may be a little hard to read. Here is the full story.
I came home from a two day concert on Saturday. I had fed and taken care of my fish before I left. I have gone out before longer than two days and my aquarium does fine. Well anyways, I came home and noticed my fish were floating on the surface. The were still alive so I assumed they were lacking oxogen. I adjusted my canister filter's output pipe so it would create more surface agitation. I then left to take a class. I came home two hours later to find all but, seven fish dead. I promptly removed the dead fish. Did a test on my water. Temp was normal, but Ammonia was 2 ppm
was 3ppm. I did a 50% water change and let it sit for a few hours. The fish started to move around a lot more and become active again. The Ph. was not changed so that wasn't a factor. I did another water change and left it for the day. The next day one of my corys died. I kept up with the water changes except the no2
wasn't really going down. I then took some filter media from my brothers 10 gal
tank and added it to my canister filter. The next day the ammonia was pretty much diminished. it was less than .25 ppm
and less after water changes. No2
was still through the roof. So now the couple of day I have been doing 50% water changes two or three times a day. Testing regularly. No fish have died since the cory. Although all my fish are breathing heavily. Is there anything to do?
my tank is 50 gallons
I have a ehim canister filter that has never failed me.
according to my family there were NO power failures.
Nobody tampered with my tank while I was gone. (also nobody fed either)
I have no idea what caused it.
I have beach sand as a substrate.
this tank has been running for more than a year.
so any help would be great!
Here is a plan I may default to. I will go get a 10 gallon tank. Move my fish over to that one. I'll take my brother's filter media out of the 50 gal
and use it to insta-cycle the new 10 gal
. Then pretty much start over with my 50 gal
. dosing it up to 4 ppm
of ammonia and so on.
p.s. I can't move my fish to my brothers tank. I have tiger barbs and he has a betta in his.