First of all thanks for taking the time to read this. Here is my story, I've always been facinated by aquariums. I've been thinking of buying one for the past year or so, but always held back b/c of the cost and also b/c first I wanted to get a bigger house. Last weekend I bought what a thought was about a 30 to 40 gallon aquarium at a yard sale. The lady gave it to me for $15 dollars, so I thought it was a win, win situation. After going to pet stores and measuring my tank I found out that I'm the new owner of a 125 gallon tank. Now, I'm getting worried b/c I read about how delicate fish are; however, I'm a man, so I want the best thing, which I believe is a saltwater aquarium. Unfortunatly I don't know very much about starting an aquarium so I desperatly need your help. Very first mistake I made was to get the aquarium home and use soap to wash it. The lady that had it before me had Rabbits in it, so it's stunk, plus I didn't know that I was not to use soap. Can I still use the tank and if so, how can I make sure that it doesn't have any harmfull chemical? Also when I do a leak test do I have to fill the tank all the way up, and what can I do with 125 gallons of water afterwards? I would hate to waste all that water. Guys, you're going to have to take me by the hand like a baby and help me be succesfull at this.