I am starting a 50g tank and had some questions. I had bought a 2x96w 50/50 power compact light setup and I was wondering if i will be able to grow hard corals with this lighting? Another question i had is concerning filtration. The store keeps trying to sell me a canister filter but i have been told to stay away from them. I was thinking about getting a Penguin 350 with bio wheels and a Skilter. Would this be sufficient or should i go ahead with the canister filter? I plan to put in a refuge in the next couple of months but money is tight and cant afford all the supplies at this moment. Also what is the recomended LB's of Liverock for a 50g?