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#1
12/23/2007, 05:29 PM
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anyone regualte lights with chiller?
I was thinking about having the halides turn off and the chiller on when the tank temp hits 81 F. The lights would come back on and the chiller off when the temp returns to 79F.
Any thoughts on this idea and does anyone already do this>?>> Dean
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#2
12/23/2007, 05:41 PM
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It would work if set up properly the only downside I see is that the metal halide bulbs life will be shortend due to being turned off and on so much. Why do you want to do this anyway??
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#3
12/23/2007, 05:55 PM
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try a fan across the top of the tank. It will help blow heat away from the surface that's created by the MH.
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40B Mixed Reef 100% Captive Grown Corals See, that's the trouble with the world today. Not enough danger to kill off stupid people before they get old enough to breed. Bring back lawn darts! -PrivateJoker64 |
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#4
12/23/2007, 06:01 PM
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Also couldnt be good for corals. With the constant on/off
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#5
12/23/2007, 06:01 PM
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Why on earth would you want your tank to stay that stable? Also, I don't think the corals would appreciate the sudden on/off of the lights - when I turn my lights off and back on, the corals take an hour or so to open up again... I let my temp swing all over the place and it doesn't phase them. There is actually fairly strong evidence that temp swings are good for them.
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#6
12/23/2007, 06:16 PM
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Quote:
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Who would have thought that something so expensive could relax you so much. |
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#7
12/23/2007, 06:47 PM
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there are 2 sides to the coin- people also say that the temp sings are the worst thing for the corals. My plan would cut the halides off for about 30 minutes every 3 or so hrs. the actictic would stay on the whole time.
thoughts?>
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the only dumb question, is the one not asked... |
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#8
12/23/2007, 07:02 PM
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My corals open 5 minutes prior to lights on and retract 5 minutes prior to lights off. The fish retire for the day at around the same times......
If a fish has the instinct/nature/anything to in anyway react to when the light is on or off it must be better to not screw with it. IMHO 
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#10
12/23/2007, 07:42 PM
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Quote:
__________________
Some people say, "How can you live without knowing?" I do not know what they mean. I always live without knowing. That is easy. How you get to know is what I want to know. - Richard Feynman |
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#11
12/23/2007, 07:53 PM
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yes, ricks large temp swings could be bad, but if you think about it, in the ocean, a shift in current can change the temp pretty dramatically, quickly. Most of the research I've seen on temps suggests that prolonged extreme temperature is detrimental, but short term changes may be beneficial... I can't comment for sure on what large temp swings are, but I often let my tank swing up to 6 degrees a day and everything is doing great.
Circadian disruption, due to light perturbation, is going to be much worse than any short change in temp. Especially in physiologically simpler organisms, such as cnidarians, where only a brief pulse is needed to reset the clock..
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Some people say, "How can you live without knowing?" I do not know what they mean. I always live without knowing. That is easy. How you get to know is what I want to know. - Richard Feynman |
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#12
12/23/2007, 08:17 PM
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I do. My Aquacontroller is set to turn off my MH if the tank temp increases to 82 degrees. I also programed into the controller that if the MH is turned off due to the temp increase, too stay off until the temp has decreased 1 degree. I actual use I have had my lights go off about an hour early on the hottest summer days maybe a dozen times. I like it as a safety, no chiller.
Last edited by Mark426; 12/23/2007 at 08:22 PM. |
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#14
12/23/2007, 10:41 PM
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To keep the tank from getting too hot- like say the upper 80s. I'm also in the camp wondering why you want the tank to stay so stable, especially at such a cool temp.
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#16
12/24/2007, 08:59 AM
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77-84 is fine, but you should be able to do this without turning lights on and off... In grad school, to save money, I wouldn't run the AC. In the summer, the temp would sometimes get over 90F and two fans, pointed at the surface of the water of my 55g, was enough to keep the tank temp in the low 80's.
If you like playing with gadgets, maybe set up some fans on a temp controller.
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Some people say, "How can you live without knowing?" I do not know what they mean. I always live without knowing. That is easy. How you get to know is what I want to know. - Richard Feynman |
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#17
12/24/2007, 09:00 AM
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Yeah, that's pretty good. Pretty much anywhere between 76 and 86 is good. I'd shoot for an average of 82 though.
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Lanikai, kahakai nani, aloha no au ia 'oe. A hui hou kakou. |
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