Attributes

Brand	-
Category	Sports, Yoga, Fitness & Fan Gear / Pool Equipment
Origin	-
Active Ingredient	Copper Sulfate Pentahydrate (98%)
Form	Blue Crystals
Weight	5 lbs (2.27 kg)
Application Area	Swimming Pools, Ponds, Fountains
Target Pests	Green Algae, Moss, Slime
Solubility	Highly Soluble in Water
Usage Frequency	As needed based on algae growth
Safety Gear Required	Gloves and Eye Protection
Storage Condition	Cool, Dry Place Away from Moisture
Country of Origin	USA

6 reviews

Anonymous

Mar 19, 2026

Rating: 5/5

Saved my irrigation tank

Used this to clean out my agricultural water tank. The blue vitriol crystals dissolved completely and removed all the sludge and algae buildup. Highly recommended.

Anonymous

Mar 16, 2026

Rating: 5/5

Best solution for stubborn moss

I have a decorative fountain that constantly gets mossy. Nothing else worked until I tried this copper sulfate. It dissolved easily and cleared everything up.

Anonymous

Mar 15, 2026

Rating: 5/5

Worked perfectly for my pond

My koi pond was turning green fast. I followed the dosage instructions carefully, and within three days the water was crystal clear again. Great value for the price.

Anonymous

Mar 13, 2026

Rating: 3/5

Good product, packaging could be better

The chemical works well for algae removal, but the bag arrived slightly torn. Luckily the inner liner was intact. Would recommend double-bagging for shipping.

Anonymous

Mar 10, 2026

Rating: 5/5

Great for large pools

We have a very large outdoor pool and this bag lasted us the whole summer. It keeps the algae away effectively without needing harsh chlorine shocks every week.

Anonymous

Mar 06, 2026

Rating: 4/5

Effective but handle with care

This product definitely kills algae in my swimming pool. Just make sure you wear gloves when handling the crystals as they can stain skin. Results were visible quickly.

5 FAQ

Q: What is the recommended dosage for a 10,000 gallon pool?

A: For general algae prevention, use approximately 1 pound per 10,000 gallons. For heavy infestations, you may need up to 2 pounds. Always check label instructions.

Q: Does this product expire?

A: When stored in a cool, dry place in its original sealed container, copper sulfate has an indefinite shelf life and does not lose effectiveness over time.

Q: Can I swim immediately after adding this to the pool?

A: No, you should wait at least 24 hours after treatment before swimming to allow the product to fully dissolve and disperse safely throughout the water.

Q: Is this safe to use in a pool with fish nearby?

A: Copper sulfate can be toxic to aquatic life in high concentrations. Please ensure proper dilution and follow specific guidelines for ponds with fish to avoid harm.

Q: How long does it take to see results after application?

A: Most users see a noticeable reduction in green algae within 24 to 48 hours, with complete clearance typically occurring within 3 to 5 days depending on severity.

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