My father in-law has a standard 55 gallons tank. I think the dimension is roughly 48x13x20. I want to have someone local to build him a led fixture that is mounted into the canopy. So as for the number of leds, color (red,white,blue,uv..), what do you guys suggest? This is a planted tank with CO2 injection. So I would need a led fixture that can provide sufficient light to the substrate. THanks!!!