Need Help

[chipster55]

Hi all. I have 2 tanks..55 and 75 gallon. Yesterday I did a 20% water change in my 75 gallon tank. Prior to the change my readings were ammonia-0, nitrite-0, nitrate-5. After the water change (and 4 dead fish) my ammonia had jumped to .50. I have used this water source (city water) without any problems in the past. After the water change I checked the water right out of the tap and it had an ammonia reading of .75. Is this normal and if so should I put a zeolite package in my filter? I have a canister filter so there is room. I did another water change today with bottled water (three 5 gal containers) and I hopr to save my red tail shark. He was floating upside down for a while but he has recovered and seems to be holding his own..Any suggestions would be greatly appreciated.

 

[WILDER]

Shouldnt have ammonia in tap water i think, i would post this thread in chit chat you will get more replys, sorry for your problems and R.I.P. to the fish that died.

 

[chipster55]

Shouldnt have ammonia in tap water i think, i would post this thread in chit chat you will get more replys, sorry for your problems and R.I.P. to the fish that died.

Thanks will do that