light ...

[reefoman]

I have 3x250W 14,500 K (Giesemann megachrome coral) bulbs and 4 x 39W
T5 actynic plus light , my tank is 190 gal .
I just started to keep SPS and I am not sure how many hours my light have to be turned on .
I want to turn on central bulbs for 2 hours longer , I think around 8 hours and left and right bulbs for
5 hours ???
How do you think guys , any suggestions from SPS keepers .

 

[jackson6745]

depends on your water quality. If your water is "dirty" you can cook your SPS all day with MH's with no problems. If your nutrient level is kept low enough, you can get a way with a 2-3 hr photoperiod. You really need to experiment a little bit to see what I'm talking about.