It sure is. I can honestly say that my 125g could end up as a FW tank of the investment is too great but I've started selling all kinds of stuff on eBay to try and fund it. One guy on MFK said he had some stuff to get rid of and would msg me a list and I'm hoping someone on here will see my sig and have something to get rid of. The biggest investments for me since I'm gonna DIY my fuge/sump is the RO/DI, protein skimmer, and lighting (lighting is like $550+ just for the fixture!!!) and that's not even getting into the price of sand and rock for itMan you guys and gals have some big tanks. I have to figure out how big my neighbors tank is. Saltwater is cool and all, but it is SO expensive for all of the stuff compared to freshwater.
Lol it's fun just thinking about it and thinking about what I might put in it though