metal halides?

[jbonez]

how many hours do you keep your halides on???

 

[shifty51008]

mine are on for 7 hours.

 

[jbonez]

ok thanks i was running them for 8hrs

 

[robertcedgar]

I go 10 hours per day.....

 

[James77]

I do 6 hours on my 120, with 10 hours of light from LED actinics. I am starting up a frag tank and plan on 4 hours on and 8 hours off twice a day to see if growth is better and to help keep my heaters running less.

 

[Reefnut2010]

8 hrs MHs, 9 hrs t5s & LEDs, then 4hrs of moonlights. Total darkness from 12:00pm on.

 

[PSU REEFER]

MH 7 hrs, VHO's 12.