
Originally Posted by
John
Not knowing where you live exactly makes it hard to answer that. 2 feet deep is very shallow for a pond - I would not be surprised if that was prone to freezing solid in most temperate countries. I would try the floating ball solution first to see if that helps (doesn't work on ponds that have thick ice on them though).
Looking at those products from a nature pond point of view, it really depends on how much they heat the water. However it seems like they only keep a small area ice-free, and if this is the case I'm all in favour of them but I advise you trial one before leaving it in there permanently.