Thanks again for the help guys, I have never used the analog because I heard that they can be really off. I think im going to use the all living things ones for now since that's what I have been using till now and the frog seems to fine. But if I did decide to go with a glass one would it be ok to use with a pacman frog. Theres nothing in the tank hard enough for it to break on but he wouldn't be able to break it some how on his own would he? I was actually reading another thread that you guys commented on about the glass ones so I was kinda already thinking about it, I was just waiting for someone to respond about the others first, and there was a picture in the thread so if I do get glass I know what to buy.