How many hours of light? Halide and T5 Combo

[calvi]

Hello,

I'm just returning to the reefing world after many years away. My original tank had decent growth with only using 4 T5 bulb in a 70 gallons.

I recently purchased a used tank that came with the Hamilton Cedu 2 250 Halide and 4 T5 combo.

My intend is to grow SPS coral in the 90 gallons (3x2x2) tank.

It seem excessive to have all the lights on for 8 hours. What would be your recommendation? or minimum?

Maybe... 2 hours T5 -> 4 hours ALL lights -> 2 hours T5


....or even less?

Thanks in advance.

 

[mcgyvr]

I'd recommend no less than 6 hours of peak light and typically running the lights for 8-10 total hours..
Thats fairly close to what they receive in nature.