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I was wondering if anyone knew if this heater like won't crack if my turtle bumps into it and if it will then what should i put around it to prevent that?

http://www.petco.com/Shop/Product.aspx?R=45&PC=productlist&Nav=224&N=24%20125&Ns=P_Price|0&sku=928925&familyID=13811&

I use that particular heater and I love it. It isn't glass, so it won't break like a glass one would, but it still has the do not touch zone, lol. I don't have anything around mine, and have never been inclined to. There are heater guards that you can buy, but I don't know much about them. One thing you can do is place it in your tank vertically instead of horizontally. Your turtle will be less likely to stand on it.