2g Planted... lights making it too hot? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 01-15-2004, 10:42 PM Thread Starter
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Hi all, first post here...

I'm starting up a 2gal planted hex for my desk (at home)... let me start off by saying you guys have been a wealth of info already, and I've seen some spectacular nanos around here...

I'm using the 2g Aquascene Hex from Walmart (the one with the big ugly hood). Right now there's an air powered sponge filter in it, but that may get replaced for something smaller (maybe one of those Azoo miniature HOBs)... there are no plants/fish in the tank yet...

Anyway, my question pertains to the light, and the temperature. That big ugly hood houses a 15w incandescent. I left it on today while i was at work, and came home to find the tank temp at around 84F... the temp in the room is around 71-72F. The bulb is puttin off a lot of heat, obviously...

Would one of the compact flourescent replacements, or the 13w retro fit from AH supply, run cooler? I had planned on switching anyway for the plants, but if it the tank is gonna that hot I'm gonna have to do something else with the hood and lighting. I had planned on keeping a betta, and I've got a 25w submersible to help keep him warm, if necessary...

Anyway, 84F isn't gonna cut it... what can I do so I can leave the light on without the tank being 84 degrees?

dave
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post #2 of 9 (permalink) Old 01-15-2004, 11:26 PM
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Hi Dave, welcome to the planted tank!

You can replace this incandescent bulb with a screw-in flourescent bulb. You should look for a bulb with a K (Kelvin) color temperature of 5000-6500K. For example, very suitable 10W screw-in bulbs are sold in some Walmarts (Pet section, not lighting section).

They run much cooler, and are brighter as well.


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post #3 of 9 (permalink) Old 01-15-2004, 11:40 PM Thread Starter
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Awesome... thanks...

You think I'll need the heater with the cooler bulb? The room is generally ~70F or so...

dave
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post #4 of 9 (permalink) Old 01-15-2004, 11:53 PM
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That depends on the fish that you want to house in it. If there is none, or fish that like cooler water, like Mountain Minnows, a heater is not required. For a Betta, you should add a little heater.


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post #5 of 9 (permalink) Old 01-15-2004, 11:56 PM Thread Starter
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Awesome... I've got the little 25w waiting...

Thanks for the quick replies...

dave
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post #6 of 9 (permalink) Old 01-16-2004, 12:03 AM
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If a screw-in flourescent still heats the water too much, you could drill a bunch of holes in the back of the light fixture to encourage the hot air to escape.

Personally, I would find out what temp the tank runs at with a screw-in flourescent. Then get a heater and set it to that temperature. Heaterless tanks do ok during the day but can get cold at night when the light goes off and most peple turn their room heat down. Not a problem if you choose fish that can take it, of course.
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post #7 of 9 (permalink) Old 01-16-2004, 12:22 AM Thread Starter
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Well, actually I was headed to find a bulb shortly, so I could do exactly that tomorrow...

I hadn't thought about the temp at night... I guess I'll need the heater after all... the only fish I plan on having is the betta, so it'll need heat at night...

dave
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post #8 of 9 (permalink) Old 01-19-2004, 01:06 PM
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a small desk fan will do wonders if you can point any of the fan's exhaust through a hole in the hood to provide evaporitive cooling.

Ray

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post #9 of 9 (permalink) Old 01-19-2004, 04:01 PM Thread Starter
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Well, that was my next move...

Looks like the swap to the flour. bulb did the trick though... I ordered a couple extra vent plugs from AH Supply, so i may put em in this thing, for good measure...

Thanks everybody for your help...

dave
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