Crystal Blue ® Copper Sulfate Crystals, 5 Lbs.


$19.99 EA

Crystal Blue ® Copper Sulfate Crystals, 5 Lbs

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


  • Crystal Blue ® Copper Sulfate Crystals
  • Algaecide
  • Active ingredient: Copper sulfate pentahydrate (CAS # 7758-99-8) - 99.0 %
  • Other ingredients: 1.0 %
  • Copper as metallic: not less than 25 %
  • 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 contain koi or trout
  • Can be used to treat cyanophyceae (blue green), chlorophyceae (green), diatomaceae (diatoms) and protozoa (flagellates)
  • Can be used as a sewer treatment for root invasion
  • Follow all local, state and federal laws regarding the use of pesticides


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!

Review Summary

Customer Reviews

No Reviews