I have a new question about this project.Can I use standard T5 bulbs?I found a great deal on some T5 ballasts but unfortunatly they are not HO ballasts.I was thinking of 8 standard T5's that would give me a greater amount of lumens and about the same number of watts,but I am unsure about the standard bulbs penetrating to my tank depth 28"( btw my tank is a 150 gal. 72x18x28 ) any information would be very helpful.