ATI Sunpower Sizing on 120 gallon tank

[Kayvon]

I'm starting a new 120 gallon system with 48" x 24" x 24" dimensions. I plan on making this an SPS dominant tank. I have a few questions:

1. Should I go with 6 or 8 bulbs? I have 2 Kessil 360's I plan on using for supplemental lighting & shimmer.

2. Should I go with a 48" or 36" fixture? I'd like some room to get into the tank and have the Kessils, so I'm leaning towards 36".

3. What bulb combo?

What would you all recommend?

 

[Kworker]

Since you are going to have to hang the fixture anyway.. I'd say go with a nice floating canopy, mount the two Kessils inside the canopy and get some LET Miro-4 t5 retrofit kits... I'd go with 4 t5's total (so two kits)

36" t5's would be sufficient for a 48" tank.

 

[Kayvon]

Thanks for the input. Sounds like the floating canopy idea would have the Kessils as the heavy lifters while the T5's are supplementing. I used the Kessils for a couple of years and felt like they weren't cutting the mustard in the growth department, so that's why I'm going with the Sunpower.

 

[Kworker]

Thanks for the input. Sounds like the floating canopy idea would have the Kessils as the heavy lifters while the T5's are supplementing. I used the Kessils for a couple of years and felt like they weren't cutting the mustard in the growth department, so that's why I'm going with the Sunpower.

More like 50/50. The two Kessils plus 4 individually reflected t5's should be plenty of light.