What is the # of hours MH should stay on?

[xxnonamexx]

I have a 20K MH coralife system 300W total. I wanted to know what is the # of hours I should keep them on? I have Hard and soft corals, zoos, etc. I usually have it on for 10hrs. I wanted to know if I can cut it back? Thanks what is recommended? Thanks

 

[stradt03]

i run my PC light for 12 hours and the MH for 10. HTH

Jason

 

[lando]

PCs=10hrs, MH=8hrs.

 

[cmor1701d]

Lando,

Is that your recomendation or your photoperiod? I've always read 12 hours of 03 and 10 hours for 10k whether they are PC or MH.

 

[lando]

That is my photo-period. I did use a 12hr period when I was just running CF. I cut back when I upgraded to MH.