Hey guys I have a twenty long tank and am going to be putting tiles in the tank for my one leo since she keeps going under the repticarpet and I do not feel comfortable with her doing this... I was wondering if i should just let the tiles lay in the bottom or seal the edges and cracks... I was thinking to seal everything so she cant get her toes stuck anywhere but what should I seal it with? Personally I was thinking of using silicone, but do not know if it is safe for the geckos to come in contact with once dry... Any and all help/ opinions are appreciated and I thank everyone in advance for their time and response.