Unless you find your missing fish the problem is likely a lack of oxygen event that caused some of your fish to die. Interesting... this may seem like a dumb question, but how would I check this? I have my returns pointed at the water surface and 4 powerheads, all working.
Alternatively, you can be experiencing a cycle. You should check your parameters. Will check when I get home.
Alternatively, you may have had a temperature spike. Possible - wouldn't this affect more fish? I unplugged my heaters before I left the house this morning simply because its supposed to be fairly warm today. My tank has been hovering around 81.5 over the summer.
It is doubtful that anything in your tank attacked, killed and ate two fish and killed and partially ate the other in one evening.Well it is Shark Week........[/quote]
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