just wondering... wouldnt sand make it A LOT harder to clean their tank??? personally, i like the idea of "easier to clean"! I heard that you shouldnt get small rocks because the turtles might eat it, but i never heard anything about turtles eating sand... I dont know if theyd eat it or not?!?! hopefully not because then it would block their bowl systems up! Well good luck with whatever you decide! 
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~ Evie 
Pets:
German Shephard {Dusty}
German Shephard/Collie mix {Shadoe}
2 RES turtles {Booger and Snot}
African Clawed Frog {Bingo}
Snail {Gary}