I am trying to get a bigger tank and I need some info. Right now I have a 20 gal. I have found a couple good deals on the internet for a 30 and a 37. Right now I have a hang on back skimmer and a 125 watt metal halide, that causes a lot of algae to grow by the way. Will these be good enough for the 30 or 37? Also if I do get this new tank what is the best way to transfer my livestock? Do I have to cycle the tank all over again? Thanks for the advice