Crystal Plex ® Algae Control, 1 Gallon


$35.99 EA

Crystal Plex ® Algae control is a liquid algaecide / herbicide used to control many forms of algae in ponds, lakes and other water bodies. This algae control is 100 % safe for humans, fish, pets, livestock, irrigation, swimming and birds. Not for use with Koi, trout or goldfish ponds. Use as directed.

Availability: In Stock -
Ships via ground service. Sales and shipping restrictions apply.

Use Crystal Plex ® algae control to treat algae mates and other select floating plants in your pond, lake, canal and more. As with any other pesticide or algaecide, follow label directions for application rates and procedures. The active ingredient in the Crystal Plex ® algae control is liquid copper sulfate pentahydrate. This chemical contains free copper that inhibits photo synthesis in the algae. Use as directed.


  • Crystal Blue ® Copper Sulfate Smart Crystals
  • Algaecide
  • Active ingredient: Copper sulfate pentahydrate (CAS # 7758-99-8) - 19.8 %
  • Other ingredients: 80.2 %
  • Copper as metallic: not less than 5.04 %
  • See package details for application rates and precautions
  • Use only as directed
  • Do not use in residential ornamental fish ponds or other artificial water body systems that contain koi, trout or goldfish
  • Can be used to treat a broad range of algae including chara, spirogyra, cladophora, ulothris and oscillatoria.
  • Crystal Plex ® will also treat rooted and floating aquatic plants like hydrilla, and water hyacinth
  • Follow all local, state and federal laws regarding the use of herbicides
  • Use as directed to avoid oxygen depletion


Shipping Information

Your order is important to us and we will strive to process it as quickly as possible. Most in-stock items are shipped within 2-4 business days and typically deliver in 5-7 business days. In-stock items may ship from multiple locations and can arrive on separate days. Heavy or bulky items will ship via Freight/Truck Service and will take 8-10 business days for delivery. For those immediate product needs, we do offer at an additional cost, express service from UPS and Motor freight.

Shipping costs are determined by item weight and your zipcode. Once you have entered your shipping address, city, state, and zip code into checkout, your shipping total will be calculated and available for review. Please see the shipping map below as a guide.

Return Information

Your satisfaction is our priority. If for any reason you are not satisfied with a purchase from Agri Supply, we will gladly refund your money, or exchange the item, or fix it should it break. A minimum one-year warranty applies to all non-perishable items, parts and service from Agri Supply, and all hand tools sold by Agri Supply have a lifetime warranty, regardless of the length of the manufacturer's warranty. See our Agri Supply Guarantee for more details.

To return an item... give us a call at 1-800-345-0169, or visit one of our 8 retail stores near you, and one of our friendly customer service representatives, or store employees, will be glad to assist you.

If you have any questions please contact our Customer Service representatives at 1-800-345-0169

Standard UPS Ground Shipping Map -
UPS Ground
The above shipping chart applies to UPS ground shipments to the 48 contiguous states only. Please call 1-800-345-0169 for timing on shipments to Alaska, Hawaii, and Puerto Rico, thank you!

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