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So weird event last night. I got home from work and fed the fish like I do every night. All the fish were very active and eating fine. About an hour later I did a small water change on the tank like I do every week. When I turned the pumps back on I looked and saw my carpenter wrasse suddenly go belly up and float to the bottom of the tank. She had been swimming around and looking good just moments before and then suddenly and instantly dead.
I tested the water before putting it in the tank just to make sure all parms were exactly the same and they were. All temp, sal and ph were perfect. The only thing that went in the ro water was salt. The water is circulated with a powerhead and heated. The only thing I changed recently on the RO system was the carbon block and micron filter.
I tested the water after the water change as well and parms are unchanged and holding steady. All other fish look fine and swimming around, inverts look good and corals open and doing good.
Needless to say I am completely mystified about the wrasse. Never seen a fish die so instantaneously and she was one of my favorite fish.
Anybody have any thoughts as to possible causes?
I tested the water before putting it in the tank just to make sure all parms were exactly the same and they were. All temp, sal and ph were perfect. The only thing that went in the ro water was salt. The water is circulated with a powerhead and heated. The only thing I changed recently on the RO system was the carbon block and micron filter.
I tested the water after the water change as well and parms are unchanged and holding steady. All other fish look fine and swimming around, inverts look good and corals open and doing good.
Needless to say I am completely mystified about the wrasse. Never seen a fish die so instantaneously and she was one of my favorite fish.
Anybody have any thoughts as to possible causes?