About a month and a half ago i setup a new tank
77 gallon with dry/live rocks . I did my cycle with a yellow tail damsel for approx 3 weeks and everything was fine. Then decided to add 2 clownfish bout 10 days ago they were both very happy and eating well.
Today i noticed i didnt find my damsel for about 5-6 hours so im assuming he's dead and both my clownfish can barely swim anymore they are just hanging there and getting pushed from powerhead to powerhead
i can tell ther sick/dying. Right away i took my water parameter
Forgot to take nitrate
My last water change was 10% a week ago
And im guessing the ammonia is at 0.25 cause earlier i had a hermit crab kill my red scarlet to steal his shell so he was left dead till the emerald crab ate him hours later + the possibly dead damsel who has gone missing.
What could be wrong with my clownfish ?? I desperatly want to keep them alive
Should i go ahead with a water change right away ?
What is oxygen ? I read that in other threads ? Do the powerheads i have prevent oxygen ?
Anything would help thanks,