Hey all, new to the forum. I am in the process of setting my 55 gal. tank back up. I used to have it set up about a year ago until the hurricanes messed my house up and what not. But now I'm starting over. First question is, what would be better sand from the beach or crushed coral. My last tank I had it was sand and was a little bit cloudy. The reason why I don't know which to choose from is because I want to have a few little blue crabs in it and I want them to be comfortable. My last tank only lasted about 2 weeks because the nitrate levels spiked when I put a few mole crabs or "sand fleas" in it and they rotted. Stupid mistake on my part. To add, the species I will e putting in my tank would be possibly, small whiting, pompano, snook, mullet, menhaden, redfish. Also a few shrimp to. Any tips or comments will be appreciated. Thanks, Jay!