whats better my own DIY retro kit of MH and t5 (cost cheaper)
or a MH and T5 fixture? ($100.00 or so more)
If you are handy, DIY would be better. You can hand pick the reflectors, bulbs, ballasts, everything.
But a fixture is just plug and play. They will both light the tank, so is $100 worth convenience and instant gratification?
The 90 wave is my all time favorite tank btw. I can't wait til you 'scape this thing.