How much light do SPS really need a day

[Staghorn03]

I was just trying to determine how much light do sps need a day. I'm currently running 3 400watt 14K HQI bulbs an 2 54watt atinics witch is total of 1308 watts of light on a 180 gallon. I'm not sure how long i need to run the light for right now there on for 7 hours a day.

 

[cleverbs]

6-7hrs for you MH is fine then I would run your t5s for an hour on each side of that.

 

[Staghorn03]

Thanks cleverbs i'll make the changes with at apex controller now for 7 hours day and see how it go's