I'm setting up my 125 and I want to build a canopy to match my stand and include the lighting. I have looked at the 96w kits from AH Supply. This will be a Malawi tank, non planted. I've really looked at alot of HD and Lowes fixtures, but I'm not sure how much light I really need. Plus, 3' fixtures seem hard to come by. I did see 3' dual T5's at Lowes, for $29 each with 21w bulbs. Will 2 of these be enough(84w) for me or will I need 4. Plus will any T5 bulb work in these(re: higher k value) or am I stuck with the 3000k that come with it.Thank you.