"I read some reviews on other sites and thought I would give this a try. This is my first time setting up a saltwater tank and I didnt want to wait for the cycling process, so I bought everything top of the line! YOU GET WHAT YOU PAY FOR HERE. I mixed the saltwater "with the proper gravity of course", the correct temp., added the the Bio-Sand, added the Live Rock, and added some extra bacteria from Nutrafin Cycle, and let the tank sit overnight. The next day I was able to add fish and all levels were correct! THIS STUFF IS THE BEST! I would only recommend adding fish if you take the proper steps, I have a protein skimmer, power head, and a Marine Land Emperor Filter all top of the line. Good luck to everyone."