"Bill Stock" wrote in message
...
My office tank has been running a little hot lately (82-84+) . The room
temp hovers around 28°C at the moment, so the SAEs are near their max
temp?

I did a water change recently and matched the input temp to the existing
tank temp. The next night I saw an SAE lying on the bottom breathing
rapidly. I turned the light off, added extra aeration and (slowly) cooled
the water slightly, but the SAE was gone within an hour. I've been leaving
the lights off and left the added aeration, with no further losses. The
tank temp has dropped to around 80 or less.

I'm more inclined to suspect something funky about the water change, but
could the marginal temps be the primary factor?
===========================
If the water change was large and the new water of very different PH and
Hardness that could cause a problem with many fish. My goldfish are much
more sensitive to massive water changes than my plecos and otos for example.
I try not to let a PWC go more than 2 weeks, 3 at the most.

Others have other views.
--
KL....
Aquariums since 1952.
My Pond & Aquarium Pages:
http://tinyurl.com/9do58
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