lighting

[griz56]

How long should the lights be on for in a "general" coral and fish setup? I currently am running a 250 watt MH for 16 hrs. My corals look good but being new to the whole coral thing, I wasn't sure if 18 would be too much.

 

[Aurora D.]

Usually 12 hours is the photoperiod most people shoot for, because that's the approximate time most corals get in their natural habitat. Some people run over a little, but I think 16 and 18 hours are just too long. Problems can sometimes arise (As I've Heard). So 12 hours is the best time to shoot for.

 

[griz56]

Thanks Aurora D, I will adjust my lighting duration down a bit.