need help fig out size for ats

[divinedragon13]

wasnt sure on feed load want keep it lightly stocked mixed reef tank when im done came by theses light for 100 bucks
had nano tanks for last two years to frist big tank i had.
right now all i have is 3 clowns and some zoa's so fig i'd try ats with what i alrdy had try get it working if i like it then build a full set up
i have no plans on adding fish anytime soon tell i can get tank under control

so if i go for 3 cubes a day and change to cfl bulbs on each side i need screen ?x? and how many watts?

[SantaMonica]

You'll probably only feed 1 cube.

[Floyd R Turbo]

The biggest difference is spectrum. The MH light will not be the right spectrum. Also hard to tell from your pics but it doesn't look like the screen is getting a lot of flow.

I would downsize that guy to 4-6" wide and put an 11W CFL floodlight on each side. Leave the extra length on the screen so that the water doesn't crash down into the sump. Leave it 6" wide if you plan on doing more feeding later then you can up the light and position it in the middle of the screen, or add more lamps.