| SPS Coral Forum Discuss "Small Polyped Stony" Corals here |
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01-04-2007, 09:12 PM
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#1
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Plankton
Join Date: Oct 2006
Location: white bear
Posts: 41
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how long to leave MH on
How long to leave lights on vho atinic and the halides 15k?
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01-04-2007, 09:38 PM
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#2
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Join Date: Mar 2006
Location: spartanburg, south carolina
Posts: 4,571
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I would say about 10-12 hours for actinics and 8-10 hours for the halides is a good starting point. Adjust as needed.
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01-04-2007, 10:37 PM
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#3
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Talkingreef Live Co-Host
Join Date: Dec 2006
Location: The Frag Farm
Posts: 760
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my halides stay on for 8 hours a day and actinics for 12. a photosynthetic coral does most of its feeding from the light in the first 5-6 hours that the lights are on. the rest is for pleasing the tank owners eyes, so it is completely up to you on that aspect. hth
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 Bobby
Tank Size(s): 125gal. SPS reef, 55gal. softy reef, and 116 gallon frag system.
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01-05-2007, 02:04 PM
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#4
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Shark
Join Date: Mar 2005
Location: bloomington
Posts: 1,956
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3 for me
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01-05-2007, 03:57 PM
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#5
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Just some guy, you know?
Join Date: Sep 2005
Location: West of Dimples
Posts: 18,099
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My MH is on for 12 hours per day.
Whiskey
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Mr. Jive/Dr. Heckyll
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01-05-2007, 05:46 PM
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#6
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senior member
Join Date: Jan 2000
Location: Walnut Grove, SC, USA
Posts: 13,316
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8 hrs a day for me, and I do not use actinic for fluorescent supplementation currently, but do some times (see below). I have done 10 to 12 hrs, but I cut the light off for 2 hrs in the middle of the day when doing this.
Spanks had a test they were doing with multiple on-off light periods during the day, don't know how this turned out, but I personally have heavy coral growth, only problem is that it is hard on MH bulbs. I use VHO's during the off MH perios and cut them on about 2 hrs before and 2 hrs after the MH's total photoperiod.
HTH
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Tom <"))))>(
(TDWyatt)
Wise men speak because they have something to say; fools, because they have to say something. -Plato
Last edited by tdwyatt; 01-05-2007 at 05:52 PM.
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01-10-2007, 10:26 PM
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#7
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squid
Join Date: Jan 2007
Location: york,pa
Posts: 2
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I keep mine on for 10hrs a day.
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01-10-2007, 10:47 PM
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#8
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Moderator
Join Date: Nov 2004
Location: Montana
Posts: 5,419
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Welcome to TRT turbonegro!!! 
5 hours a day here, the rest is made up with 9 hrs of 50/50 pc's.
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~Vince
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03-07-2007, 09:12 PM
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#9
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Shark
Join Date: Dec 2006
Location: Western Wisconsin: LaCrosse Area Reef Keepers (LARK)
Posts: 1,758
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5hrs per day.
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03-10-2007, 11:28 AM
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#10
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Great TANG LOVER!
Join Date: Jan 2007
Location: Jefferson City, MO
Posts: 609
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I run my halides 11 hours a day, the URI Super Actinic VHO's 13 hours. The VHOs come on 1 hour earlier and shut one hour later....they serve as dusk to dawn also. I aslo run a halide over my fuge on a reverse photoperiod. |
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03-20-2007, 12:50 PM
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#11
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Coral Killer
Join Date: Jan 2006
Location: CT
Posts: 307
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5 hours. I dunno how these guys do 8-12. My corals are toast at 6.  |
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04-14-2007, 10:58 AM
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#12
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Just Confused
Join Date: May 2004
Location: Buchanan,Ga
Posts: 468
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my lighting is 2x250 @ 14k their on fron 7:30am 9:00pm. As far as corals turning into toast tell me where you are and I'll bring the jelly 
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65gal RR,EuroReef ES5-3 Skimmer,BlueLine Volocity T3
Sump Return, 2x14K 250w + 1x175w@15k MH's ,Mag Dr.1200 W/SCWD for alternating water movement.
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