Hi, I have a 55-gallon freshwater aquarium I want to change to a saltwater tank. I've been looking into this for years now and each website gives different information. I was wondering what everything I needed was. Do I need to invest in a new heater can I use the same one? what about filters? Do I need a special one? I want to eventually get a dwarf fuzzy lionfish so what is the setup for that? I do what to stay on a budget so not like extremely expensive stuff. ill take any help, links to other threads. Thank You!