Hi all, I'm connecting a new 10 gal tank to my gerbil's home (2 girls, living in 2 connected tanks, 15 gal each). I was thinking of making this new tank a sand tank (say, 2 inches of sand) so they'll have this big sand bath to have fun in. My question is - will they make it their toilet? how often will I have to change the sand? Yael
