Step 3: Crystal Plex Algae Control

Kills algae and maintains water quality.

Read our Pond Care Guide to identify the most common types of algae and submerged weeds, and to see our handy 4-step program to get your pond ready for summer!

Delivers long-term algae control by using proprietary stabilizers. This 30-day algaecide is a liquid copper sulfate solution that kills and controls algae such as filamentous, chara and placktonic, as well as some aquatic plants including hydrilla. Not for use in Koi, Goldfish, or Trout ponds! 100% safe for humans, fish, livestock, pets, birds, swimming, potable water and irrigation. Spray directly on the algae mats for control, but treat only 1/3 - 1/2 of your pond at a time to avoid oxygen depletion. One gallon treats 1 surface acre, 1-3 feet deep. Ship wt 10 lb.