Well ive had my 180 for about a year now and ive had frshwater the whole time. Ive found this lady close to my house who sells everything for really cheap. I have the to unit. I have. The lights, i have a 55 gallon sump. Is there anything else that is major that i will need besides salt and the little thing? I plan on corals and would like some stock suggestions too. I'm brand new to salt so any advicr is appreciated. I also have a 55 quarantine tank. Thanks again