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Fish Dying and coming to surface for air.
I just bought a set-up tank and moved it. I used all the same water, did not do a water change, put in Stress Coat in the amount noted on the bottle the day after the move (yesterday). When I looked in the tank this morning, all four Amano shrimp, one tetra, and one Chinese algae eater are dead. The other fish are coming to the surface for air. I did a quick strip test just to check water, and it looks fine. Temp looks fine. I don't know what to do. :(
Assuming there is surface agitation, my initial guess would Ammonia/Nitrite poisoning. Are you using all the same decorations, substrate, and filter media? Was any of it cleaned? During transport were these items kept in tank water?
I used API Stress Coat yesterday, and I miscalculated the dose. It said to give double the dose for stress, and I gave double that doubled dose.
API said that could definitely be the problem. :( They recommended a 30% water change.
I'd definitely be doing a water change - and then perhaps you can answer the questions Geomancer posed.
The ammonia is 0, nitrites are .25, nitrates 40 before water change.
Do an immediate major water change, down to 3/4 of the tank volume. Just siphon out the water, don't do any other work to stress the fish more. Use a good water conditioner on replacement water.
Come back here with results and we can continue discussion. Just to clarify...by down to 3/4, I mean remove 3/4 of the tank water.
What about surface agitation?? This is important as it alones the exchange of gases into and out of the water. Without Oxygen in the fish will gasp at the surface combined with Nitrites in the water plus to much Stress coat. I would say this is some of the problem.
I would personally do at least a 50% water change add the right amount of the conditioner and monitor the nitrites. As long as those are present I would daily water changes.
Sorry double post.
It may not be the problem right now but you need to make sure the tank has surface agitation. I've had this happen recently when I swapped my 80's sponge to be hooked up to a power head. Looks like I didn't have enough surface agitation due to the angle, and well I caught it well in advance, adjusted the angle and added a small bubbler to make sure this isn't an issue again.
Also pay attention to the heat of your tank. Tanks in higher temps hold less oxygen.
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