I'm going to be getting a 225g 6x2.5x2t tank and was wondering if I should get two of these, http://www.aquarium-supply.biz/ProductDetails.asp?ProductCode=RES58009&click=2 and spread them out of if one of these, http://www.aquacave.com/48-aqualight-t-5-doublebr-strip-fixture-790.html might be enough for it? On a tight budget right now or I would get one of the nicer fixtures. I've never seen a T5 fixture used in person so i don't know how bright they are really...