I have never heard about that with the sand. I might just leave it as is. but I know I cannot lift this thing with the sand. So I will have to move it once. I did catch a break today and a friend loaned me a 55 gal tank so I can transport 55 gal from the new tank and add the fish to that tank. so they will have no change... if the 55 has nothing but water it shouldnt have any spikes. I can run that for a week or two till the big one even out. If we could find that roller cart that would be awsome I think I will give him a PM. I am going to buy the tank tonight. I think I will grab the fish too. and tommorow start moving rock and water.