If your level doesnt go up when you add water from your lfs try taking water outta the tank and putting more salt into it then put it back into your tank:Cheers:
Boxfish arnt as scary as you are making them out to be. But they are a very hard fish to care for. As long as you dont have a violent fish that will pick on it there is no reason for it to poisen your tank. Granted your tank is too small ( so please take him back) but when you upgrade you will...
Also make sure your starfish is reefsafe, most stars are not. Like the chocolate chip isnt. If you get any type of linkia starfish dont let it touch the air or it will die....
Your sand bend isnt a huge problem, you could always get some sandsifting starfish to help out and some serpeant satfish. they will really clean up a sandbed.
I am with prc on this one, I think you added to many fish at one time. plus tangs create alot of waste, keep an eye on your water paramiters. :bowdown:
Sorry to hear about your corals. But like with any angel fish it is a 50/50 chance they will eat your coral.:frustrat: Net him and throw it out on your diveway.....:shock:Just kidding.
Goodluck with that clown tang, they are very hard to keep alive in captivity. I have tried a number of times and they have died out of the blue. Hope you have better success then i did.:Cheers: