to the forum! I don't own a saltwater tank, but I have done my research because ive wanted to start one. I was going to do a 20 gallon tank, I already had the tank and the filter but besides that if you want to do live rock with corals and everything, start up cost was going to be approximately $650.00 or more. So keep that in mind.
It is a lot cheaper without live rock and corals, but so much more fun im sure with live. Youd have to buy your water, or set up an RO
system in your house. With saltwater aquariums, bigger is better. Smaller tanks need a lot more maintenance because bacteria and ammonia, etc. build up faster.
But if you give us more information about what youd like to stock, everyone will be able to help you out more specifically.
You've come to the right place!