You can check on their site for local dealers, who should be able to order one in for ya. As long as it's the rectangular one, those are made for either. I'll try and dig up where I read that just to verify it, haha. Check out this thread, http://www.monsterfishkeepers.com/forums/showthread.php?423238-My-tiny-343-Gallon-indoor-pond , he's got 2 of them side by side one for fish and one for turtles.