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Re: Aquatic Plants Digest V3 #1052
>Date: Tue, 25 May 1999 16:49:21 -0400 (EDT)
>From: Paul Secinaro <pauls at shore_net>
>Subject: Lights and tank overheating
>I have a 20 gallon high tank, which is currently lit with a Perfecto 24"
>SHO fixture sitting on a glass canopy. Now that the weather has been
>getting warmer, I've been noticing that the heat generated by this
>convection-cooled fixture is causing my tank temperature to rise about 3-4
>degrees over the heater setting in the late afternoon (and the weather
>hasn't even started to get hot out yet). So it will jump from 78F to
>around 82F. Clearly, 4 months of this is going to be bad for my fish!
I've noticed that my 30" SHO fixture puts out quite a bit of heat too. In
my case, the temperature variation is about 2 degrees from morning to
evening, which doesn't seem to bother my fish. However, if the sun starts
heating up the tank too, I could have a problem with large temperature swings.
If this happens, I plan to put a fan or two over the SHO light, or possibly
lower the water level so the light is further away from the tank.
michael moncur mgm at starlingtech_com http://www.starlingtech.com/
"There it was, hidden in alphabetical order." -- Rita Holt