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#1
06-17-2009, 12:37 PM
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from doing PAR tests on both T5's and CF bulbs I have found that T5's have a 50% more output than CF, so if you are using 39w T5's they will put out about the same PAR as ~55 watt CF bulbs, so if you are staying at the same color of bulb then yes you are downgrading.
I would go to a 4 bulb fixture for the T5s if I was replacing two 96 watt CFs. Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*Some strive to be perfect.... I just strive. 
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#2
06-17-2009, 02:51 PM
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What type of fixture is it? Does it have individual reflectors?
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260g mixed reef, 105g sump, water blaster 7000 return, Bubble King SM 300 skimmer, Aqua Controller Jr, 4 radions, 3 Tunze 6055s,1 tunze 6065, 2 Vortech MP40s, Vortech MP20, Tunze ATO, GHL SA2 doser, 2 TLF reactors (1 carbon, 1 rowa). http://www.canreef.com/vbulletin/showthread.php?t=50034 . Tank Video here http://www.vimeo.com/2304609 and here http://www.vimeo.com/16591694
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#3
06-17-2009, 04:21 PM
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It is 36" Glo T5 HO Fixture Double vs 36'' Marine Coralife Aqualight Double Compact Fluorescent
________ Herbal Health Shop Last edited by Coleus; 04-30-2011 at 04:43 AM.
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#4
06-17-2009, 06:07 PM
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I agree with StirCrazy, you will be slightly downgrading, but also using quite a bit less electricity. So the new lights will be more efficient.
The Glo fixture does not have individual reflectors (although you can buy a reflector upgrade kit it still isn't individual), so is not as effective as a fixture with individual reflectors. When choosing lighting, and comparing, looking at reflectors is very important. For reference, I had the same 2x39w Glo fixture over my 33g reef (16" deep), and I was able to grow LPS quite well. SPS not so much. If you do buy the Glo, don't use the Glo bulbs, they aren't that great. Buy some better bulbs like Korallen-Zucht, AquaScience, or UVL. You will get much better PAR out of them. Also, watts per gallon is not an accurate way to measure lighting, although lumens is not too bad. When measuring lighting, the depth of the water is the most significant factor.
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#5
06-17-2009, 09:03 PM
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Thank you for all your feedbacks.
My tank is 21 inch deep. So beforre i can get a hold of 4 fixture T5HO, should i continue to use my two 96 watt CFs? I have some fishes, anemonies, zoa, mushroom, ricordea, but no SPS. ________ Nevada Marijuana Dispensary Last edited by Coleus; 04-30-2011 at 04:43 AM.
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#7
06-18-2009, 10:17 PM
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Hi Myka
My tank is 46 gallon bow front. The dimension is 36 inch width x 21 inch height I have 2 bubble anemones ________ Kitchen Measures Last edited by Coleus; 04-30-2011 at 04:43 AM.
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