Pond & Lake Supplies

Copper Sulfate Crystals

Seed Barn


Copper Sulfate Crystals 

  • A versatile farm chemical:
  • Pest control - snails and slugs
  • Pond cleaner - algae, mosquito larvae
  • Natural fungicide mildew
  • Antiseptic - household germs
  • Organic Bordeaux mix - blight, apple scab, leaf curl, etc.);
  • Remove old tree stumps (bore a hole and insert
  • Kill roots clogging septic tank pipes - flush down the toilet.
  • Wood and canvas preservative (prevents dry rot),

...or simply grow lovely blue crystals.

 Usage: For pipeline systems (toilets, etc.) - 1 cup down drains every 2 weeks or 2 cups per month. 

AK

Customer Reviews

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Based on 48 reviews Average Rating 4.88 stars out of 5
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  • J
    Joseph C Carlson J. C. C. Joseph C. C.
    12-12-2024

    Delivery

    On time and packaged well. Thank you

  • D
    Dennis Lovinfosse D. L. Dennis L.
    10-11-2024

    Thanks for the product and service

    Got what I wanted and the service and delivery were very god. thank you!

  • B
    Bret Rider B. R. Bret R.
    26-10-2024

    Quick shipment

    I received my shipment earlier than originally stated and arrived intact. Good price.

  • R
    Ron Kowalski R. K. Ron K.
    17-10-2024

    Too Early to Tell

    Check,back in a few weeks.

  • A
    Alan Lewis A. L. Alan L.
    03-10-2024

    Very Satisfied

    Fast delivery, good product, good price. Completely satisfied.

  • Rhea . R. R.
    16-09-2024

    Blue food

    Have purchased previous and works fine. I’m using to keep roots out of Septic

  • W
    William McKee W. M. William M.
    20-08-2024

    Review

    Crystal size larger than expected - great for my use.

  • S
    Sheri Kelly S. K. Sheri K.
    07-08-2024

    Copper sulfate crystals

    This is working great in our pond! Very happy with this product. Thank you, we will order again.

  • D
    Dana Mazor D. M. Dana M.
    27-07-2024

    Good experience.

    The copper sulfate I purchased was a good price and the shipment was fast. Great company to buy from.

  • K
    KEN STINE K. S. KEN S.
    14-07-2024

    Came as advertised shipping time was excellent

    Copper Sulfate Crystals

  • J
    John Burrows J. B. John B.
    08-07-2024

    Excellent Company!

    Seed World is an excellent company to purchase seed and other materials from!! Very easy and efficient ordering process, with delivery as expected - on time!!

  • J
    Jim viviano J. V. Jim v.
    03-07-2024

    Great Experience

    Product delivered, no surprises.

  • K
    Karen Mann K. M. Karen M.
    09-06-2024

    Copper sulfate

    Product worked well

  • G
    Gale Fillinger G. F. Gale F.
    09-06-2024

    Root Killer for drain field

    The company that installed and maintains my septic system and drain field insists that this is the best product to maintain root growth in the drain field.

  • G
    Gary Adams G. A. Gary A.
    26-05-2024

    Copper sulfate 10 pounds

    Happy so far

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