So, I made a huge mistake. I recently moved and I didn't change the sand. Every time I have moved before, I changed the sand. Well, both of my tanks crashed. I lost most of my corals. Totally sucks but I am going to use this as an opportunity to upgrade my tank. I have plenty of room to add pretty much any size tank I want. I am already starting to plan an 8'x4' tank nut it will be about a year before I can afford that tank. In the time being, I want to put in a different tank. Looking for something as big as 6' wide by 3' deep. It can be smaller but want to go bigger than the 40 breeder. Let me know what you have. Thanks.