richard@gryphon.CTS.COM (Richard Sexton) (05/05/88)
In article <5690@spool.cs.wisc.edu> farrens@speedy.cs.wisc.edu (Matthew Farrens) writes: >In article <3787@gryphon.CTS.COM> richard@gryphon.CTS.COM (Richard Sexton) writes: >> >>If you ever hear of this happening, let me know. I've never heard of it. > >OK, listen up.:-) It happened to us, only not at 2am. (Actually, I think it did Ok, so it happened once :-) >>I've never found a fish that couldnt hack 60 - 90 degree water. >>Can the heater. Just stow it and see what happens. >> >OK, I happen to know of several, because I bought a 2.5 gallon hex-like tank >for my office and put some hatchets, gouramies, and a cat in it (the furless >kind.) However, my office is in a new building and they lower the heat to >about 65 at night, so my poor fish were cycling between mid-70's during the >day and mid 60's at night. After a couple of them expressed their displeasure >by ceasing to breath, I put a heater in and had no more trouble. (Except for >the hatchets, who *insisted* on jumping out of my covered tank regularly. You >would think they would learn after landing on the floor about the third time!) Well, you would drag up the worst case wouldnt you ? :-) a 2 gal tank is very small, and changes temperature real quick combine this with an artificially cooled building and you have a good reason to get a heater. In our place here though, we dont use heat or A/C, and the ambient temprature is just fine. -- You've always been the caretaker here. richard@gryphon.CTS.COM rutgers!marque!gryphon!richard
oleg@gryphon.CTS.COM (Oleg Kiselev) (05/05/88)
I have been waiting for someone to mention it, but I guess the pros assume
that "everyone knows this". Water has a much higher calorcic capacity than
air and the convection heat exchange through the glass of the aquarium is
a rather inefficient means of cooling (or heating, for that matter).
Therefore, aquarium water will tend to fluctuate in temperature, but with a
much smaller gradient than the air temperature, with the same average temp.
The bigger the tank -- the more stable the water temperature.
--
Oleg Kiselev {frodo|bilbo|lcc}.oleg@seas.ucla.edu ...!ihnp4!lcc!oleg
oleg@quad1.quad.com (forward)
DISCLAIMER: I speak for myself only.