I am thinking about 2 rows of 24" or 3 rows of 18". The three rows allows for more tank size options but has more ballasts and increases cost by 30%. I also gain some wattage with 3 rows. I thought about 48 inch lights then at the end turning 20 inch bulbs for a 10 gallon. I also thought about either 18 or 24 inch bulbs front to back, as many as would fit in the 60". Ballast them in groups of 4 in all setups with a group or 2 ballasted 2 bulbs. No overdriving, all NO.
With this setup, I know I need to have a really open top, how much light is lost using eggcrate? I also know that height is a factor but at the possibility of 270-360 watts, I don't think it would be hard to grow just about anything in a couple 20 gallons or a 55. I couldn't even imagine the possible wattage from PC
. That wattage is assuming only 6-8 bulbs in each row. I guess with the measurements it is possible to put up to 4 bulbs for every 6 inches so a lot can fit in 24 inches deep.
Reflectors will be cut glass unless I can find an easier way to go. Standard glass plate is really inexpensive and can be cut to whatever sizes I want. Reflector for every 2 bulbs, maybe 4 if I think it gives enough eficiency. Will make M reflectors for efficiency, and should still be easy making it out of wood.