







🌊 Clear waters, zero compromises—Captain Liquid Copper conquers algae fast!
Captain Liquid Copper Algaecide is a 1-gallon, EPA-approved, fast-acting algae control solution designed for lakes, ponds, and reservoirs. It targets all major algae types including planktonic, filamentous, and chara, delivering visible results within 1-2 days. Safe for livestock, wildlife, and irrigation, this expert-trusted spray offers an easy application method to maintain crystal-clear water without restrictions on fishing, swimming, or drinking.






| ASIN | B0018Q3SC2 |
| ASIN | B0018Q3SC2 |
| Best Sellers Rank | #297,525 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #477 in Water Garden & Pond Treatment |
| Brand Name | SePRO |
| Customer Reviews | 4.4 4.4 out of 5 stars (63) |
| Date First Available | October 16, 2008 |
| Date First Available | October 16, 2008 |
| Directions | Combine 32 ounces of Captain with 2.5 gallons of water and spray on top of the algae until it turns dark blue. Only apply to a maximum of 1/3 the total surface acreage at a time. |
| Item Dimensions LxWxH | 13 x 9 x 11 inches |
| Item Package Dimensions L x W x H | 13 x 11 x 9 inches |
| Item Weight | 10.5 Pounds |
| Item model number | cap001 |
| Item model number | cap001 |
| Manufacturer | SePRO Corporation |
| Manufacturer | SePRO Corporation |
| Material | Other |
| Product Dimensions | 13 x 9 x 11 inches; 10.5 Pounds |
| Size | 1 Gallon |
| Target Audience Keyword | All forms of algae (Planktonic, Filamentous, and Chara) |
S**S
Works great!!
Why did you pick this product vs others?: Used the product on Wednesday and again on Friday diluting 32oz to 2.5 gallons water. All the algae was gone by Sunday so extremely satisfied. The ducks were swimming in the pond less than 12 hours after I sprayed and they as well as fish are all fine. The dog was swimming Saturday and he is fine. One thing to note, do not under any circumstances let your wife read the information on the label attached to the container as she will associate this product with a nuclear explosion.
B**N
It worked
It worked over several applications. Algae was bad so it took several applications..
D**R
Great product
This product has done exactly what I needed it to do, I will re-order again, but get the captain XR next time
A**R
Great Product
Lasted for more than 30 days and made our pond look beautiful
S**S
Complete waste of money. Our pond looks worse now.
Complete waste of money. Our pond looks worse since we applied this Captain Liquid Copper Algaecide. What was in the container seems to have fed the algae as there is more now than when we used this stuff. I am going to get my money back one way or another.
T**Y
Highly recommend it!
This stuff works so well it might be illegal. I mixed 1-gallon with 15-gallons of water and sprayed it from my sprayer mounted in a flat-bottomed boat into my 2-acre pond. Within an hour the visible, suspended algae was gone. In two days the water was clear and the fish more active. Ad says 1-gallon per acre, but 1-gallon in 2-acres of pea-soupy water did the trick for me.
C**T
Big difference
Product did exactly as described. My pond looks professionally treated.
D**B
Expensive and mixed recoew
Didn’t work as well as I was hoping but also realize this is a marathon rather than a race.
Trustpilot
Hace 2 meses
Hace 1 semana