Every K&H de-icer is safe in all stock tanks, unlike nearly all of the other de-icers available in the market today. No expensive shrouds or cages need be purchased either. Every one of our de-icers can be used as a floating de-icer out of the box or in seconds converts to a submersible de-icer with the click of a button! In the past, all that was readily available were energy gulping 1000 watt to 1500 watt de-icers; Customers had no choice but to purchase these expensive to run de-icers, even when they didn?t need it. We?ve solved this problem by creating a whole line of de-icers along with a convenient zone chart for consumers to choose the correct de-icer, every time! A free cord safety clip is also included with every de-icer. This ingenious clip secures the de-icer to the edge of the stock tank, bucket or container to help prevent chewing, cribbing or removal of the de-icer from the tank. When it comes to fresh water, K&H Farm Essentials is the choice that makes cents.