Crystal Blue Copper Sulfate
Best granular algaecide for pond owners managing stubborn aquatic growth.
Crystal Blue Copper Sulfate from Martin's AG LLC is a powerful granular algaecide designed to effectively combat most types of algae, including stubborn filamentous and string algae. Packaged in a convenient 5-pound bottle, this product offers a straightforward solution for maintaining clear and healthy water in ponds and other water bodies. Its granular formulation ensures easy application, with a recommended rate of 2.5 to 4 pounds per acre foot for optimal results. Trust this reliable chemical treatment to manage aquatic growth and preserve water quality.
$21.25
Owner Satisfaction
4.6
/ 5
Category Rank
118
/ 1309
#118 in Pool Cleaners & Chemicals
Price vs Category Average
-69%
Below average
Weight
5
/ lbs
Who it's for
- Pool owners needing fast relief from stubborn algae blooms
- Farmers and pond managers seeking a versatile chemical solution
- Precision-focused users requiring easy-to-dissolve, accurate treatment doses
Who should skip it
- Environmentally conscious managers concerned about long-term sediment buildup
- Owners of sensitive fish or delicate aquatic ecosystems
- Users unwilling to perform regular water chemistry testing
Performance breakdown
Algae Eradication
Highly effective at neutralizing stubborn filamentous and string algae blooms.
Application Ease
Granular consistency allows for simple, controlled distribution across water surfaces.
Water Clarity
Rapidly clears murky water by targeting and eliminating invasive aquatic growth.
Treatment Precision
Clear dosage guidelines ensure accurate chemical application per acre foot.
Chemical Potency
Copper-based formula delivers a heavy-duty punch against persistent pond algae.
Packaging Utility
Five-pound bottle size is ideal for manageable, recurring pond maintenance.
Key Specs
Weight
5 lbs
Package Size
5 pound bottle
Form
Granular
Application Rate
2.5 to 4 pounds per acre foot
Chemical Purpose
Algaecide
Active Ingredient
Copper
Debris Type Compatibility
Algae
Features
- Controls most species of algae
- Effective against string algae
- Ready-to-use granular form
- Targeted aquatic algae treatment
- Easy to apply formulation
- Maintains water clarity
- Reliable chemical treatment
- From Martin's AG LLC
What customers say
Customers consistently praise Crystal Blue Copper Sulfate for its powerful effectiveness in clearing pond algae quickly. Users frequently highlight the high quality of the crystals, noting they dissolve well and provide reliable results, often exceeding expectations compared to cheaper alternatives. The consensus is that while the initial cost might seem higher, the product offers exceptional value due to its concentrated strength and long lasting impact on water clarity. This reliability makes it a trusted solution for serious pond maintenance.
Know before you buy
This product uses copper as its active ingredient to disrupt the growth process of algae. It is specifically formulated to target and eliminate various species, including stubborn filamentous and string algae.
The recommended application rate is 2.5 to 4 pounds per acre-foot of water. You will need to calculate the total volume of your water body in acre-feet to ensure you apply the correct amount.
Yes, the granular form is designed for straightforward application. You can distribute it evenly across the surface of the water to ensure the treatment reaches the affected areas effectively.
Copper-based algaecides can be sensitive for certain aquatic environments. It is important to follow the application rates carefully and consider the specific ecosystem of your pond before use.
While results can vary based on the severity of the algae bloom and water conditions, you should begin to see a reduction in algae growth shortly after the product has fully dissolved and dispersed.
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$21