How long is your photoperiod?

[GPhiAce]

How long is your photoperiod and what bulbs do you have??

Me first- 6hrs MH, 7hrs T5 Actinics

[MrSandman]

You need to add 5 hours. :) Mine is 5 hours MH and 12 hours VHO Actinics.

[HBtank]

8 hours main, 12 actinics.

[Nanook]

I run shorter photoperiod in summer months to save on electricity as our rates are higher from June through September. I am currently running MH's for 5 hours a day and VHO for 1 hour at beginning and end of photoperiod. This is pretty minimal lighting compared to the usual 8 hours of MH I run during the other 8 months, but it keeps a handle on my power bill.

[kb27973]

<a href=showthread.php?s=&postid=15219768#post15219768 target=_blank>Originally posted</a> by HBtank
8 hours main, 12 actinics.

Same here.

Ken

[Hammsreefbeer]

6 hrs MH and 1 hr actinic before and after.

[Reef Bass]

9 hrs MH, 12 hrs T5 actinics. Lots of color and growth.

[Logzor]

7 Bulb T5's on a 90g

3:00pm-11:00pm (3 bulbs) Blue+ Blue+ Fiji Purple
4:00pm-10:00pm (2 bulbs) Blue+ Blue+
5:00pm-9:00pm (2 bulbs) Aquablue special Aquablue special

Improved grow going to this from a 10+ hour cycle. I may bump it up to see if my corals have adjusted. The fixture is directly on top of the tank and some corals are a few inches below the water line!

[95accord]

10h actinics and 7h MH

[xtm]

8 hrs actinic, 7 hrs MH for about a year now and having good growth. I used to be on 12-hr photoperiod but I did not notice any difference in growth by switching to 8 hrs.