Do you have carbon on the tank? If not I'd put some into the filter just in case some contaminant was introduced.
Fish Died / Dying After Water Change
- Thread starter NitroK
- Start date
happened to me once. i was living at my grandads ( not where i am now ) and did the useal water change on the 29 i had ( had a bunch of tanks and did water change like normal on all tanks ) then one night, i did my weekly water changed and an hour later i lost ALL the fish i had.... idk what killed them but none made it ( i was overstocked to but over filtered at the same time )
Hope you can save some of the fish, sounds like you had a sweet stock, hope all turns out as best it can. Good luck, and by the way, I wouldnt think temperature shock in a tank that size, Itd take a lot of water at a drastic temperature change to have an effect.
Your ammonia level and nitrate level could be too high. i would add some prime to the tank and some stabilizer. start the cycle again, same thing happened to me. And YES i would definitely call the water company about that one cause that isn't good. i actually didnt do a 50% water change i did a 25% water change and they started breathing very heavy and strafing. and i tested and came out to be that the chlorine level was high along with ammonia and nitrate. I added some prime to the water (careful to much can hurt the fish) and then stabilizer started the cycle and it worked well all are doing Awesome. hope this helps Good luck!!
