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Old 06-14-2011, 11:45 PM   #1
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T5HO overpowering MH Lights

i just put two 150 watt MH (300 watts total) lights with 20000k bulbs on my tank.

turned them on and thought they were kind of dim.

been on for an hour now and they still seem dim. and when i turn on my T5HO lights (170 watts total) it completely overpowers the metal halides to the point where i cant even see the shimmering at all.

what gives?
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Old 06-15-2011, 01:37 AM   #2
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try it with 10k bulbs it will be bright, 150watt 20k mh just isn't bright imo, but the intensity is there.
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Old 06-15-2011, 01:50 AM   #3
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20000k bulbs have a lot more blue, less "white" light, so I suppose they appear dimmer. But the fact is your corals will still benefit tremendously, especially the light loving ones. You could go for a Maxima with that for sure.

I know what you mean, I have some PC bulbs and they overpower my LED lighting, though when the PC bulbs are off the LED lights are visibly bright and make glitter lines.


If you wanted your tank just brighter, go for some 14 or 10k bulbs because there will be a lot more white light in their spectrum.
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Old 06-15-2011, 02:50 AM   #4
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What brand halides are you running? You can always cut back on your T5HO, maybe use only half of them and save some electricity too.
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Old 06-15-2011, 11:07 PM   #5
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the on goign debate continues, my 96watt 4 lamp T5 puts out more light then any of the 250watt MH fixtures i've ever installed, and i've installed a lot.

simple fact MH are old school T5s and LEDs are the current lighting to use. plus T5s you can color up things so much nicer then any MH will do


http://reefcentral.com/forums/showth...readid=1352234
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Old 06-16-2011, 01:51 AM   #6
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Yes, T5HO and LEDs are newer in the hobby and are proven to work. However, look at majority of the Tank of the months within the link you put above. Most of them still run halides and have some of the best tanks out there. IMO this statement, "plus T5s you can color up things so much nicer then any MH will do;" is not accurate.
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Old 06-16-2011, 06:43 AM   #7
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how is it un accurate
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Old 06-16-2011, 09:49 AM   #8
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Quote:
Originally Posted by Gti_Leo View Post
how is it un accurate
*inaccurate

plus thanks for all the advice guys
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Old 06-16-2011, 02:39 PM   #9
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Quote:
Originally Posted by Gti_Leo
how is it un accurate
It is inaccurate because it is an opinion. Yes there are more color options with T5 and LEDs, but none give the shimmer of the halides if that is your thing. I happen to like halides much better, I really like the halide/t5 combo strips. You can have your cake and eat it too.
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Old 06-16-2011, 03:26 PM   #10
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BTW, the link you posted compared top of the line T5 lights to a 150w halide setup. Halides come in all different intensities, just because this particular test yielded higher PAR for the T5 doesn't mean it is true in all scenarios. Put a 250w 14k halide up there, or a 400w. Just like you could add more T5 bulbs, there isn't a one size fits all solution. It was however interesting to read his particular results. As for the OP, look into some different bulbs for your setup. With the right setup you will get the shimmer your after.
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