Unlike nearly all of the other de-icers available in the market today, the Farm Essentials Ultimate Stock Tank De-Icer is completely safe for use in your stock tank. No expensive shrouds or cages need to be purchased, either. Even better, the Ultimate Stock Tank De-Icer can be used as a floating de-icer out of the box or as a submersible... simply spin off the top to convert! The Ultimate Stock Tank De-Icer gives you the options you need for energy-efficient climate control. It's the De-Icer that just makes sense.