The CrystalClear EcoPack brings together the best of the best from CrystalClear into one package designed to keep your pond crystal clear all season long! This easy-to-use pond care program fights common pond problems such as algae, murky water, unwanted muck and debris on rocks, streams and waterfalls. The EcoPack 1000 treats a 1,000 gallon pond for up to 4 months, while the EcoPack 2000 treats a 2,000 gallon pond for up to 4 months.