Get tests for: salinity (Amazon has them: drip water onto plate and it gives reading) ; temperature 78-80. Get Salifert tests: (Amazon if your store doesn't have them) ---Magnesium should be 1350; calcium 420, alkalinity 8.3. Overkill for a fish-only, but they'll be good and safe in it. Those are basics. You won't have killed your rock: bacteria live clear to the heart of it, but processing power of rock and sand will be very, very low for a while...do NOT overfeed! Feeding frozen cubes of Mysis Shrimp is about the least waste. Get in touch with Live Aquaria online: get some snails and micro-reef hermits. Work on water stability: test every few days until numbers stop bouncing. WHen mixing salt water : 1/2 cup salt mix usually mixes to a 1.024 reading of salinity, which is perfect. Use ro.di water or ro water from the grocery. Cheaper and saner to get your own ro/di filter: our sponsors have them. Just hook to cold water line either temporary or permanent. Produces about 1 gallon ro.di water to 4 gallons wastewater---put the waste in your dishwasher. Remember: tests run immediately after adding correction won't read right: wait 8 hours for full dissolve and mixing.