Ok folks, I have a 30 gallon tank with a 10 gallon sump..... I have been cycling it now for about 3-4 weeks. I have about 40-50 lbs of live sand in it between the DT and the sump tank. I don't have any livestock in it yet due tank cycling. My question is.... What kind of rocks can I put in my tank? I want to do live rock, but its soooo expensive! My LFS
also has dry/dead fiji rock also that is a little cheaper. I've also heard that you can use landscaping rocks as well as long as they are cleaned well. Are any of these better than the others, or a mixture of all of them, or what's going to be the best/most cost efficient way to achieve some good stuff (caves and algae) for my tank?