CrystalClear® ProFix (formerly D-Solv 9) contains a specifically designed 2x concentrated formula to clear pond water quickly and efficiently regardless of water volume. Results can be seen in as little as 24 hours. ProFix can be used in all sizes of ponds, fountains, bubblers and streams. It can be used when fish or plants are present. No matter what your clarity problem is, ProFix can help you FIX it. CrystalClear® ProFix is formulated to be stronger, work faster and more economical per treatment than any similar product on the market today. ProFix complete pond cleaner effectively controls all types of algae, from cloudy green water to string or hair algae and blanketweed in ponds, fountains, bubblers and streams. Completely safe for koi, goldfish and pond plants. Controls existing algae and helps prevents algae blooms from reoccurring. Keeps ornamental ponds and water gardens clean & clear. Works better than the competition because it is more concentrated and treats more water. In fact, one 16 oz bottle of CrystalClear® ProFix™ treats 9,600 gallons. After using ProFix be prepared to remove any dead and decaying string algae from the bottom of the pond because it can lead to poor water quality and low oxygen levels. Features: -Clears green water -Kills string algae / blanketweed -Treats 9600 Gallons -Completely Fish Safe -Completely Safe For Plants -More concentrated than other brands -Does not Contain Copper - Safe For Snails & Invertebrates