Pool frog instant frog is for in-ground pool owners that want to experience all the benefits of pool frog but do not have a permanently installed unit. This instant frog simply drops down in the pool skimmer and the innovative mineral technology will naturally reduce chlorine consumption without compromising health or cleanliness of your pool water. Instant frog kills bacteria and other organic compounds and greatly reduces common chlorine side effects. Your water will look and feel better without a lot of work or a lot o chlorine.Features. Unique design allows for skimmer installation. Can be used for new and existing In Ground pools up to 25000 gallons. Simply requires a 0.5 ppm chlorine supplement through an existing floater or a chlorinator. Dimension - 5 x 4 x 5.25 in.