Keeping aquarium Cool.

Dale Henderson wrote:

My fish are acting a little hyper but other than that seem fine. One
of my gourami's seems to be spending a lot of time at the surface, but
I think that might not so abnormal for a labyrinth fish.

I'm a bit paranoid about airation, so I keep a bubble wall going all
the time. As for lowering the water level, the water does that fairly
well on its own. I think I've lost about 1 gallon since Saturday.

Gouramis tend to hang out at the surface and they'll be one of the last
fish to suffer from oxygen problems. Hyper is not generally a sign of
oxygen shortage, except in some catfish. Cories and plecos sometimes
dart to the surface for a gulp of air (they absorb oxygen from it) when
oxygen levels start to fall.

My fish act "hyper" if there's a trace of ammonia or chloramine after a
water change. It's escape behavior in that case.

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