For anemones, you want to wait 9 months to a year to get the tank established because they are delicate, except for rock anemones (they seem like they can take anything lol).
You are going to have to cycle the tank first and depending on the tank it will usually tank between 3 to 6 weeks to fully cycle. So you shouldnt really add any fish for the first two months.
For $50 a month you can just mix your own water. The initial cost would prob be around $75 to buy the salt mix/bucket/ph/heater, but then the RO
unit... You will end up saving money in the long run, around 8 months but that's still money. And it's real easy to do. I've heard about people having the lfs
change their water and the lfs
would add chemicals to the water (probably thinking they are helping the tank) but leading to a tank crash and killing the inhabitants. Besides for me even if it cost more I would still mix my own water and change it myself becuase I know what I'm doing and if something goes wrong I can blame myself and not someone else. Besides a lot of lfs
's dont know what they are doing ,ie adding chemicals,etc. And most successful aquarists change their water every two weeks if not every week.
What kind of corals are you thinking about getting? Lights can be expensive.
And what type of filtration do you have?