I have a 300 gallon system and am currently changing things up so i can start corals in it. I want to get my lighting all set up, currently only have a led black box im the middle dosing light the whole tank up. My tank is 88 inches Long and 61 inches wide. My question is will a hybrid t5 61inch by 18 inch be enough to cover or do i need to cover every inch of the tank?