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Old 12-11-2004, 06:28 PM   #1 (permalink)
 
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I'm planning on doing a new lighting retrofit for my 29 gal Eclipse II tank. I had originally swapped out the stock 2x15w tube lights for a 55w power compact but found that the bulb generates a lot more heat than I thought it would. Deposits have baked onto the cover and permenently etched the acrylic. I was thinking of going with something shorter, like a 2x36W PC arrangement or a 96W quad lamp with a fan built in to the bulb housing to vent the extra heat. This is all based on the assumption that a 4" fan is enough to keep enough air flowing past the bulbs to keep the housing cooler. If anyone has some suggestions, I'm open to them before I start building. This includes naysayers who think this is a recipie for disaster. Mt last effort took some expensive trial and error that I'd prefer not to repeat. And I suppose it would help to say that I'm not looking to be too particular in the types of plants to keep but I'd like to have more than just the low-light options, particularly in the foreground.
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Old 12-11-2004, 06:28 PM   #2 (permalink)
 
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I'm planning on doing a new lighting retrofit for my 29 gal Eclipse II tank. I had originally swapped out the stock 2x15w tube lights for a 55w power compact but found that the bulb generates a lot more heat than I thought it would. Deposits have baked onto the cover and permenently etched the acrylic. I was thinking of going with something shorter, like a 2x36W PC arrangement or a 96W quad lamp with a fan built in to the bulb housing to vent the extra heat. This is all based on the assumption that a 4" fan is enough to keep enough air flowing past the bulbs to keep the housing cooler. If anyone has some suggestions, I'm open to them before I start building. This includes naysayers who think this is a recipie for disaster. Mt last effort took some expensive trial and error that I'd prefer not to repeat. And I suppose it would help to say that I'm not looking to be too particular in the types of plants to keep but I'd like to have more than just the low-light options, particularly in the foreground.
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Old 12-11-2004, 06:40 PM   #3 (permalink)
 
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ok, ill be the first to say it. you need to go to www.ahsupply.com and buy the 96watt kit. build a hood and install a fan at both ends if you need. i have a 30 gallon long, and i dont use any fans, and mine works fine.
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Old 12-12-2004, 01:51 AM   #4 (permalink)
 
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Carter:
build a hood and install a fan at both ends if you need. <HR></BLOCKQUOTE>


He has an eclipse system, that is not an option
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Old 12-12-2004, 05:04 AM   #5 (permalink)
 
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Some may say it is unsafe, but when a 96w cf jumped up the heat in my tank, I removed the glass cover. For a while, I replaced it with an "egg-crate" flourescent lighting cover, but now I run "naked". And, who wouldn't want to run naked !
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Old 12-12-2004, 05:37 AM   #6 (permalink)
 
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by BSS:
Some may say it is unsafe, but when a 96w cf jumped up the heat in my tank, I removed the glass cover. For a while, I replaced it with an "egg-crate" flourescent lighting cover, but now I run "naked". And, who wouldn't want to run naked ! <HR></BLOCKQUOTE>

You seemed to have missed the point also, it is an eclipse system, that is not an option
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Old 12-12-2004, 07:04 AM   #7 (permalink)
 
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I appreciate the responses so far. I have checked out the 96W quad system and have a concern about the bulb choices. I've only seen the 10,000K or dual 10K/actinic bulbs. I was under the impression that lighting shifted that far into the blue side of the spectrum wouldn't be the best for plant growth, although it does penetrate deeper into the water. The 2x36W option gives me a wider range of bulb choices in the same ammount of space. Both choices leave room at the ends of the bulbs for a small fan to expel air out the top of the hood.

Margolis, I appreciate you trying to keep responses on topic. Building an entirely new hood is not an option. I like the look and the built-in filter setup with the Eclipse system. Gutting the lighting portion of the existing hood hasn't been a problem so far. I guess to simplify my questions I'm looking at two things:

1)What is the best way to get 2.5-3w/gal with a bulb setup that fits into a 18'x4" space?

2) Can a 4" fan move enough air past the bulb to keep that light from heating the tank?
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Old 12-12-2004, 10:43 AM   #8 (permalink)
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You can get a 6700K quad 96 watt bulb from HelloLights.com. What I did for a different situation was buy the dual 96 watt kit from AH supply and cut the reflector in half. Each half fit one of the 96 watt quad bulbs perfectly, this gives a great amount of light from these bulbs. BTW, there is nothing wrong with a 10,000 K bulb for plant growth, at that point it is about 'viewing pleasure'.

Yes you can put a fan in there that can remove enough heat, you will also be removing water so be prepared to top off your tank a lot.
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