I know these are just about impossible to find. Just picked up a 6' X 3' X 2' here on MFK, but I need another one at least as large. I keep big plecos so height 24" to 30" is best for maintenance. It must be at least 3' wide and 6' long. So if you have an old ray tank you want to get rid of, let me know. I realize I'll probably have to have it custom built (probably 8X4X2.5).