Turned my tropical fish tank into a saltwater tank. In January I cleaned all my tropical fish stuff out, including my two oscars that were quite dirty. The store took them back thankfully. The tank is a 30 gallon cube and should work great as a saltwater aquarium. I bought some new sand and the salt and some various other things and set it up.
After several weeks I bought about 70lb of live rock. These pictures were taken just after i placed the rock. I will wait about a month before putting any fish in it.