i have a 55 gal. tank that i have had up for several months now. i just have LRF in it. i was thinking about getting a protein skimmer for it but i know nothing about them.. can anybody help me out with some info? i don't want to spend a lot of money so i was wondering what size do i need for that size tank? and what would be a good brand for a reasonable price.? :huh:any help is greatly appreciated...thank you..