Metal Halide, hours per day

Metal Halide, hours per day

  • Less than 4 hours per day

    Votes: 3 3.1%
  • 4-5 hours per day

    Votes: 10 10.3%
  • 6-7 hours per day

    Votes: 21 21.6%
  • 8-9 hours per day

    Votes: 43 44.3%
  • 10-11 hours per day

    Votes: 14 14.4%
  • Greater than 11 hours per day

    Votes: 6 6.2%

  • Total voters
    97

IndyReefMan

New member
For those reefers who supplement their metal halide lights with 10-13 hours per day of actinic lighting, how many hours per day do you run your metal halide lights?
 

rustybucket145

New member
12 on 12 off for me. I cut it back in the summer b/c of my heat issue, but if it weren't for the heat I'd keep 'em on 12 year round.

Actinics (VHO) on 14hrs/day
 

xenon

Owner of Canada Corals
<a href=showthread.php?s=&postid=9250927#post9250927 target=_blank>Originally posted</a> by rustybucket145
12 on 12 off for me. I cut it back in the summer b/c of my heat issue, but if it weren't for the heat I'd keep 'em on 12 year round.

Actinics (VHO) on 14hrs/day

WOW thats a long time.

Any reason why you run it that long?

I do 12hrs actinics and 8hrs MH.
 

DMK

New member
6.5hrs MH and 13hrs actinic VHOs. i got better and better coloration of coral each time i cut back on my MH time. i started at 9 a day, then 8, then 7, now 6.5. in summer it's 6.
 

funman1

New member
<a href=showthread.php?s=&postid=9267648#post9267648 target=_blank>Originally posted</a> by xenon
Any reason why you run it that long?

I run mine for 13.5 hours per day. I get insane coral growth.
Fish don't seem to care.
 

miatawnt2b

New member
I was reading a nice long post the other day about short halide photoperiods. Seems like a good way to go. I just switched to halides from t5's, and I am running halides for 5 hours, actinics for 1 hour before and 1 hour after.

-J
 
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