Remember, pumps and lights put heat in the aquarium. Turning lights off
during the day will make a difference, especially if you run multiple tubes.
Buying remote ballast fittings also helps a great deal.
High temperatures is all about oxygen. The hotter it is, the less oxygen
you have. Fish dieing from high temperatures usually run out of oxygen.
So, increase aeration. When I worked for Aquasonic, we had an aquaculture
research centre and were growing trout and salmon well over 20 degs. This
is only possible by actively adding pure oxygen and degassing of CO2.
Phil.
----- Original Message -----
From: "Ken Brook" <kbrook at netspace.net.au>
To: <rainbowfish at pcug.org.au>
Sent: Saturday, December 30, 2000 2:19
Subject: [RML] Too hot to handle in BrisVegas
> I've been watching my tank temperature climb during the recent week of
high
> temperatures in Brisbane (some relief in last few days with a rainy
spell). Up to
> 31C. How hot is too hot ? I guess it depends on the species. What
temperature
> extremes do rainbows endure in the wild .... I would have thought species
coming
> from New Guinea lakes would have some relief from a fair degree of thermal
> buffering capacity from the deeper water volumes.
>
> is there anything practically one can do about the heat besides the costly
> solutions of chillers or air-conditioning the room (save the spouse too
!?). I've
> been eyeing off an old bar fridge you see ....
>
>