Attributes

Brand	-
Category	Sports, Yoga, Fitness & Fan Gear / Pool Equipment
Origin	-
Active Ingredient	Copper Sulfate Pentahydrate
Form	Blue Crystalline Powder
Primary Function	Algaecide and Fungicide
Application Area	Swimming Pools, Water Parks, Ponds
Water Color Effect	Enhances blue water clarity
Target Organisms	Green algae, moss, and fungi
Package Weight	5 lbs (2.27 kg)
Solubility	Highly soluble in water
Usage Frequency	Weekly or as needed for treatment
Storage Requirement	Store in a cool, dry place away from moisture

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Solved my persistent algae problem

I tried several liquid algaecides before this, but nothing worked like the copper sulfate. It dissolved easily and didn't leave any residue on the liner.

Anonymous

Mar 28, 2026

Rating: 4/5

Effective but handle with care

This product works very well for removing moss from the pool walls. Just make sure you wear gloves when handling the crystals. The water color improvement is a nice bonus.

Anonymous

Mar 24, 2026

Rating: 5/5

Crystal clear water in days

My pool was turning green after a week of rain. I applied this copper sulfate according to the instructions, and within 48 hours the algae was gone and the water looked sparkling blue again.

Anonymous

Mar 11, 2026

Rating: 5/5

Best investment for pool maintenance

Keeps the water blue and free of sludge. I use it preventatively once a month and haven't had any algae blooms all season. Highly recommended for pool owners.

Anonymous

Mar 11, 2026

Rating: 5/5

Great for large water parks

We use this for our small community splash pad. It keeps the fungal growth at bay even during hot summer months. Excellent value for the amount of coverage you get.

Anonymous

Mar 07, 2026

Rating: 4/5

Good product, strong dosage

Very effective at clearing up cloudy water. I recommend starting with a lower dose than suggested if your pool is smaller to avoid over-treating. Overall satisfied.

5 FAQ

Q: How long does it take for the water to turn blue after application?

A: Once dissolved and circulated through the filter, the water usually shows enhanced blue clarity within 4 to 6 hours, depending on pool size and pump speed.

Q: Can I swim immediately after adding this product?

A: No, please wait at least 24 hours after treatment and ensure the product is fully dissolved and circulated before swimming.

Q: What is the shelf life of this product if unopened?

A: If stored in a cool, dry place in its original sealed container, the product has an indefinite shelf life as copper sulfate is a stable compound.

Q: Does this remove black algae or just green algae?

A: While primarily effective against green algae and moss, copper sulfate can help suppress black algae, though stubborn black algae may require brushing and additional specific treatments.

Q: Is this safe to use in pools with saltwater systems?

A: Yes, copper sulfate is generally compatible with saltwater chlorination systems, but we recommend checking your specific system manufacturer's guidelines before use.

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