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Old 04-19-2005, 09:24 AM   #1
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VHO's

A few questions about VHO lighting:

Do they run cooler than PC's?

Would 4 110w Lights be too much for a 75g tank? That equals out to 5.86 wpg.

Do they need to be mounted a certain distance from the water?

Are Coralife balast's good?
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Old 04-19-2005, 01:03 PM   #2
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I run 3 110w on my 110g tank. I have them mounted in a wood canopy with no glass tank cover @ 6 inches off the water. They seem to work great. Run 1 actinic and 2 daylight bulbs on a timer with I believe an Icecap 660 ballast. Not sure if 4 x 110w is too much (could probably run 3) but if you use glass over the top of your aquarium 1) your effective light will be reduced and 2) you need to watch your temps, they will run warmer than PC.
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Old 04-19-2005, 05:36 PM   #3
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I run 4 110w on a 75 and it is great. 2 actinic and 2 10,000k. I have them mounted to a wood canopy like seve1.

the coraline algea growth is awesome!
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Old 04-19-2005, 07:14 PM   #4
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Morphviper, hows the temp of your tank?
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Old 04-19-2005, 08:30 PM   #5
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I run the exact same setup on my 75. My tank stays stable at 82ish during the day as long as the ambient room temp does not climb to high into the high 70's. You can alevate some of the heat by putting a fan in the canopy pulling the hot air out.

My bulbs are somewhat close at 2" or so off the waters surface. I will get some spray and salt collection on the bulbs over time. I just wipe them down with a damp rag before they cycle on every few months.
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Old 04-20-2005, 12:03 AM   #6
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My temp is around 82. never really gets over 82 but at night it drops to 80 or 81 but I have a heater set at 80 to prevent too much change in temp.
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Old 04-20-2005, 12:10 AM   #7
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I have a nice set of Current PC's on my tank right now 4x65. any input on putting two VHO bulbs on the tank in addition to the PC's?

That'd give me 6.4 w/pg.

That's what my LFS recomended today.
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Old 04-20-2005, 02:46 AM   #8
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what size tank and what is in it?
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Old 04-20-2005, 10:51 AM   #9
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75
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Old 04-20-2005, 01:08 PM   #10
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On the ballast question I dont know about corallife but I am using Icecap 660 and like it alot. It runs very cool.
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