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Old 07-07-2009, 01:35 PM   #11
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Is this way too much?

I am now doubting about my choice of fixture as one person at my LFS said that 1134 watts (3 250W MHs and 4 96W PC) is way overkill while one other said it is OK. My tank is 72" long (125 gallon). What do you think? My contractor is coming over tonight to hang up the fixture so I need to know how high up to mount it. DP
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Old 07-07-2009, 01:49 PM   #12
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I don't have any hands on experience so I will let other help you with the distants. You can put layers of mosqito screen to filter you light to get your stock used to the light. If a contractor is installing it have him make the height variable
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Old 07-07-2009, 04:56 PM   #13
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i don't think it is overkill if you want to keep SPS corals.

I wouldn't use PC for actinic supplementation, I would use T5. More efficient and much less heat. With this kind of firepower, though, you may need to also include a chiller in your system to keep from temperatures getting too high.

LED systems are definitely available and are becoming very good options. They are hella expensive, but save on electricity and don't produce much heat at all, no chillers needed.
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Old 07-07-2009, 05:10 PM   #14
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i don't think it is overkill if you want to keep SPS corals.

I wouldn't use PC for actinic supplementation, I would use T5. More efficient and much less heat. With this kind of firepower, though, you may need to also include a chiller in your system to keep from temperatures getting too high.

LED systems are definitely available and are becoming very good options. They are hella expensive, but save on electricity and don't produce much heat at all, no chillers needed.
Too bad major companies like Current USA, Coralife don't make MH with T5s anymore but use PC instead. Something about the MH/T5 that is not selling well. I have a 47" tower fan that I will turn on while the lights are on and I will install at least 10" away from the aquarium. I did research online and I need 3 MHs because my tank is 72" (you need on every 24 inches). Since may tank is 24" deep, I would need 250 Watts so I am within guideline. I am quite sure my light system would become obsolete in next 3 years. Well, 1600.00 bucks down the drain! DP
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Old 07-07-2009, 05:19 PM   #15
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hmm they don't? T5 is newer technology than PCs.

I have an aquactinics 48" 2x250w MH and 2x54w T5 lamps with 2 LED moonlights and its awesome. Very pleased.
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Old 07-08-2009, 10:28 AM   #16
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Hello,

I do not know why Current USA and Coralife only have MH/PC instead of MH/T5. Current recently discontinued MH/T5 line and went with MH/PC instead. I hung mine up at the tentative 10" away from the tank and the improvement over my 8 T5s is marginal. You can barely see the shimmering effect. The PCs at that distance virtually play no role in color output. In addition, heat is not a factor either. I am going to bring it down to 5" to see if I can it more bright as well as improving the esthetics of the whole system too. The legs suppied place the fixture at 4" and I think it may be too close for comforts. My tank dimension is 72" long and 23" (height). Lastly, the color of three MHs (250 watts/10K) and four atinic 96W is way too yellow. I may have to buy the 20K to get it more blue. Overall, the fixture is of high quality. The four moonlights are very strong and they give a spectacular "glow" to my red brain coral, green hammerheads, frog spawn, pipe organ and green star polys. They remined me of the movie "Tron" in the eighties. The moonlights are used for special effects and not appropriate as night time lighting because of their deep blue output. DP
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Old 07-08-2009, 10:37 AM   #17
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sounds good. I have 14 K, it is a little bluer. You can google it and see pics of bulb comparisons; not only k rating but different brands look different.

make sure you are getting good water surface agitation. That is what gives it the shimmer looks as well. Point a powerhead up at the surface.
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Old 07-08-2009, 10:46 AM   #18
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sounds good. I have 14 K, it is a little bluer. You can google it and see pics of bulb comparisons; not only k rating but different brands look different.

make sure you are getting good water surface agitation. That is what gives it the shimmer looks as well. Point a powerhead up at the surface.
Do you know the ideal distance (light to water surface) with my set up? DP
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Old 07-10-2009, 12:03 PM   #19
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See Classified Section for my awesome offerings...

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