K&H Perfect Climate Submersible Pond De-Icer

Customer Rating:
Summary: Works good, but product description may be optimistic
Comment: I bought this to keep my 200 gallon pond free of ice this winter, as it said that it kept an entire 300 gallon pond of ice. Isn't actually the case; as the temperature goes down, it narrows down to a small hole, and it works best in conjunction with a pump. However, it appears to be extremely energy efficient, which is of course why it only keeps part of the pond open, so it's a very good trade-off. I'm in Wisconsin and we're starting off with a fairly cold and nasty winter, and it's keeping my little pond open for the birds and the critters beautifully. All in all, very happy I purchased it and definitely recommend.

Customer Rating:
Summary: Perfect Winter Pond De Icer
Comment: I have a 70 Gallon Pond in my small backyard. I have NO KOI but all fantail goldfish ,from Black Moors to Lion Head Orandas all over two years old and over 5 to 7 inches in lenght. The fancy types I have cannot handle constant temps in the 30 to 40 degree range. The fish are way too large to bring indoors so that is not an option this year. This De-Icer keeps the ice from forming and water temp in the mid to high 40's and the fish are swimming about during the day. I recommend this De-Icer for small ponds especially those with fantail goldfish other hardy fancy types. DO NOT MIX KOI WITH FANTAILS, Koi Do not need any de-icing but a small airator (bubbles)to keep the ice from forming a complete sheet over the pond traping poisonious gases.