over aeration of an aquarium
Apologies in advance for my terminology as I am quite new to this hobby. I have a 120g reef tank, the temperature is pretty stable always around 78 give or take a tenth of a degree. All of the ammonia, nitrate, and salinity levels are within norms and stable and I usually perform a water change every other week. For live stock I have kept it pretty simple there are clowns (5) damsels (3) Tangs (2) angelfish (2) anemones (2) (and a few others that were with the tank when I inherited it 7 months ago from a roommate who was moving across the country). The tank has been running and stable for about a year.
My question/ concern is this: since taking over the tank I have only lost one fish. This weekend I was away for a day and a half and and one of the return pumps under the tank worked itself sideways and started sucking air as well as water. When I returned last night the tank was milky from all of the air bubbles that were being pumped into the water. I fixed the pump issue and the water was crystal clear within a matter of minutes. Once the water cleared i found that both of my angel fish were dead. I am assuming that this over aerated condition is what caused their death, and not some other problem I should be looking for. The only issue is I cannot find any mention of over aeration killing fish. Thanks!
It is very possible that is what killed those fish. I've heard of this before, but not in this drastic of a deal. But, yes, it can happen. Can only imagine what the PH was doing also.
What were your other readings as this was going on?
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