Captain Liquid Copper Algaecide, 1 Gallon EPA-Approved Algae Control for Lakes, Ponds and Reservoirs, Fast-Acting Spray Targets Algae, Chara, Safe for Livestock, Wildlife and Irrigation

Captain Liquid Algaecide breaks down algae in just 6 hours, making it a fast-acting solution.

SePRO

Item #: 77842333

Captain Liquid Copper Algaecide, 1 Gallon EPA-Approved Algae Control for Lakes, Ponds and Reservoirs, Fast-Acting Spray Targets Algae, Chara, Safe

Item #: 77842333

NZD 161

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Captain Liquid Algaecide breaks down algae in just 6 hours, making it a fast-acting solution.

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What Stands Out

EPA-Approved

Captain Liquid Copper Algaecide is EPA-approved, ensuring compliance with safety standards for aquatic environments, making it a reliable choice for effective algae control.

Fast-Acting

This algaecide delivers quick results, effectively targeting algae and chara in lakes, ponds, and reservoirs, providing rapid relief from unwanted growth.

Safe for Ecosystems

Formulated to be safe for livestock, wildlife, and irrigation, it protects your ecosystem while effectively managing algae, offering peace of mind for users.

Product Details

Fast-acting algaecide breaks down algae in 6 hours
No fishing, swimming, or drinking restrictions for easier maintenance
Cannot be shipped to AK, CA, CT, HI, ME, NJ, NY, WA, or Canada

Brand Name	SePRO
Manufacturer	SePRO Corporation
UPC	811055010094
Model Number	cap001
Manufacturer Part Number	cap001
Unit Count	128.0 Fluid Ounces
Liquid Volume	1 Gallons
Item Weight	10.5 Pounds (4.76 kg)
Item Form	Liquid
Target Species	All forms of algae (Planktonic, Filamentous, and Chara)
Product Dimensions	13 x 9 x 11 inches (33 x 22.9 x 27.9 cm); 10.5 Pounds (4.76 kg)
Brand	SePRO

Who Should Buy?

Pond Owners
Ideal for individuals maintaining ponds to effectively control algae and improve water quality for aquatic life.
Farm Operators
Beneficial for farms with irrigation systems, ensuring that water remains safe for crops and livestock.
Wildlife Enthusiasts
Suitable for those caring for wildlife habitats, as it promotes a healthy environment without harming animals.

Residential Pools
Not suitable for swimming pools due to potential reactions with pool chemicals and materials.

Product Description

Captain Liquid Copper Algaecide, 1 Gallon EPA-Approved Algae Control for Lakes, Ponds and Reservoirs, Fast-Acting Spray Targets Algae, Chara, Safe for Livestock, Wildlife and Irrigation

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Product Buying Guide

Keep your swimming pool free from algae with Captain Liquid Algaecide. This fast-acting solution is designed to break down algae in just 6 hours, making pool maintenance quick and efficient. With no fishing, swimming, or drinking restrictions after use, this algaecide offers convenience and peace of mind for pool owners. Please note that this product cannot be shipped to certain areas. For residents in these areas, alternative algaecide solutions are recommended. Continue Reading

Customer Questions & Answers

Question: What is Captain Liquid Copper Algaecide used for?

Answer: Captain Liquid Copper Algaecide is designed to effectively control and eliminate algae growth in lakes and ponds. It targets various types of algae, including filamentous, planktonic, and chara. This professional-grade formula is particularly valuable for maintaining clean and clear water in aquatic environments. Regular use can help prevent algal blooms, promoting a healthy ecosystem. For instance, if your pond has been experiencing persistent green water or surface scum, applying this algaecide will improve water quality and clarity.
Question: Is Captain Liquid Copper Algaecide safe for fish and other aquatic life?

Answer: Yes, Captain Liquid Copper Algaecide is EPA-approved and designed with aquatic safety in mind. When used according to the instructions, it poses minimal risk to fish and non-target aquatic organisms. The formulation is engineered to control algae while preserving the health of beneficial wildlife. For example, if you maintain a koi pond, using this algaecide responsibly will help control algae without harming your fish, thus ensuring a balanced pond ecosystem.
Question: How does Captain Liquid Copper Algaecide work?

Answer: Captain Liquid Copper Algaecide works by releasing copper ions into the water, which are toxic to algae but have minimal impact on fish and plants if used correctly. These copper ions interfere with algal cell function, causing them to die off and clear from the water body. This process not only helps to eliminate existing algae but also reduces the likelihood of future blooms. For example, if you notice a rapid growth of blue-green algae, applying this algaecide can effectively mitigate the problem.
Question: When is the best time to apply Captain Liquid Copper Algaecide?

Answer: The ideal time to apply Captain Liquid Copper Algaecide is during the early stages of algae growth or when temperatures are warmer, as this enhances its effectiveness. It's best to monitor your pond regularly for signs of algae and apply the product when you notice a bloom. Additionally, applying it during calmer weather ensures even distribution. For instance, if late spring or early summer brings a surge in algae growth, treating your pond promptly can help keep problems in check.
Question: Can I use Captain Liquid Copper Algaecide in any type of pond?

Answer: Captain Liquid Copper Algaecide is suitable for a variety of ponds, including ornamental ponds, fish ponds, and larger lakes. However, it’s important to follow the manufacturer's guidelines to avoid over-application, which can be harmful to some aquatic environments. For example, in a fish habitat, maintaining proper dosage ensures that both algae are controlled, and fish populations thrive. Always check local regulations for water bodies before application.
Question: How often should I apply Captain Liquid Copper Algaecide?

Answer: The frequency of application depends on the severity of the algae problem. Generally, it’s recommended to assess the pond every two weeks. If algae returns, you may reapply the algaecide according to the instructions provided. For seriously affected ponds, regular treatments will support long-term algae management. For instance, if you experience recurring algae blooms, a bi-weekly schedule during peak growth seasons can effectively maintain clear water.
Question: What are the visible effects after applying Captain Liquid Copper Algaecide?

Answer: After applying Captain Liquid Copper Algaecide, you should start seeing a reduction in blue-green and green algae within a few days to a week. The water may initially become cloudy as the algae die off, but it should clear up as the dead algae settle. Monitoring your pond’s clarity will help you see the effectiveness of the treatment. For example, if you have a visibility issue due to algae, you should notice significant improvement soon after application.
Question: Is there a specific method for applying Captain Liquid Copper Algaecide?

Answer: Yes, applying Captain Liquid Copper Algaecide requires diluting the product in water before dispersing it across the affected area. It's best to use a hose-end applicator for broad distribution or a sprayer for targeted applications along the edges of the pond. This method ensures even coverage and optimal results. For example, if you’re treating a small pond, carefully spraying the edges can effectively target stubborn algae without affecting the overall aquatic life.
Question: Can I mix Captain Liquid Copper Algaecide with other treatments?

Answer: While Captain Liquid Copper Algaecide can be effective alone, it is advisable to avoid mixing it with other chemical treatments unless specified by the manufacturer. Combining chemicals can sometimes lead to adverse reactions or reduce their effectiveness. Always conduct a small test before using in conjunction with other pond treatments. For instance, if you’re looking to control both algae and weeds, check compatibility first to maintain a balanced aquatic environment.
Question: Where can I buy Captain Liquid Copper Algaecide in New Zealand?

Answer: You can purchase Captain Liquid Copper Algaecide from Ubuy, which offers a wide selection of gardening and pond care products. Ubuy's platform provides convenience, making it easy to find and order this professional-grade algaecide directly to your home. Whether you’re maintaining a private pond or a larger lake, Ubuy is a reliable source for obtaining this essential algae control solution.

SePRO Water Treatment cap001 Editorial Review

** Captain Liquid Algaecide** The Captain Liquid Algaecide has received a warm reception from users who have praised its effectiveness in treating algae in ponds. Many customers reported significant improvements in their pond's appearance, noting that it cleared up unsightly suspended algae and transformed murky water into a clear oasis. One user achieved remarkable results by mixing 1-gallon of the product with 15 gallons of water, stating the algae was visibly eliminated within an hour, and the water clarity improved drastically within two days. Such swift outcomes indicate that the product lives up to its claims, making it a preferred choice for pond care. Despite its impressive performance, some users faced challenges with the product's application instructions, expressing dissatisfaction with the lack of clear guidelines for proper usage ratios. These mixed experiences highlight a need for improved guidance to ensure all users can replicate the product's success without confusion. Overall, the Captain Liquid Algaecide stands out for its potency and effectiveness, making it a valuable tool for pond owners looking to tackle algae problems. However, potential buyers should be prepared to rely on anecdotal evidence from other users when determining the best usage methods, as the current directions may leave some uncertainty. **

Customer Reviews & Ratings

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Pros

Highly effective in eliminating suspended algae
Rapid improvement in water clarity
Positive transformations noted, resembling professional treatment results
Can be customized in application ratios based on user discretion

Cons

Lack of clear application instructions

Platform Trust & Buyer Confidence

4.1/5 355 reviews

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Ranee

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“Paint ordered from USA, u buy got the product to me in New Zealand in approx a week”

22 July 2026 · via Trustpilot

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“very speedy delivery,tracking info was superb-best experikence ever!!!”

24 June 2026 · via Trustpilot

Nicholas

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“Love what I received and ordered found that usa clothes are more better quality and look better than the same clothes in my country but are harder to find here recommend ubuy 100%”

22 June 2026 · via Trustpilot

Dneah

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“Product came earlier than expected (shipped from US to NZ), in about 3 weeks. No damages and product was exactly as advertised!”

15-Jul-26 · via Trustpilot

Tania

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“Easy to order, easy to track and the product is great to use. Also, the person-to-person (not automated) phone call I got to confirm that I'd received the item was wonderful ??”

11-Jul-26 · via Trustpilot

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Important information

Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

NZD 161

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Features & Benefits

Fast-acting algaecide
Breaks down algae in 6 hours
No fishing, swimming, or drinking restrictions
Cannot be shipped to certain areas

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Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns ^*, and secure packaging on every order.

Platform Trust & Buyer Confidence

Captain Liquid Copper Algaecide, 1 Gallon EPA-Approved Algae Control for Lakes, Ponds and Reservoirs, Fast-Acting Spray Targets Algae, Chara, Safe