tank is crashing!!!

[shotzee]

You can always order Salifert test kits from online stores and have it delivered to your house. Usually even free shipping once you spend over a certain amount, and if there are only a couple of stores locally that sell saltwater stuff, the online stores will probably have some other things not found locally.

I would have probably avoided doing a "massive" water change after you moved some rockwork around. If the salt wasn't mixed with the water for long enough, or if conditions of the new water weren't all that similar it could have thrown things a little out of wack.