Well I have been debating on whether or not I should go ahead and a clean up crew too my tank. I have wanted to do if for sometime but havent had my tank to the point where I wanted it before adding all those snails and crabs (was afraid of smashing them when adding new rock) anways now that I am ready it has gotten mighty cold outside. ( they are calling for a high of 20 degrees saturday) I live in the midwest, just outside of cincy ohio - If you were me would you feel comfortable having 100$ worth of inverts shipped to you while it was this cold ? I am thinking I prob should wait but thought I would ask