Copper Sulfate Algae Control
Pond Clear
Clear the pea soup out of your ponds and stock tanks.
Copper sulfate that destroys algae blooms in farm ponds, lakes, and stock tanks.
Rate
2 gal / surface acre
Cost / surface acre
$64.40
One tote treats
137 surface acres
Never use in water sheep drink. Goat owners: call us before using. Treat no more than 1/4 of a pond at a time. Read the safety rules.
Order Pond Clear
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Need a smaller amount for one pond or a few tanks, or a tanker load? Call (833) 247-4832.
Watch
See Pond Clear at work.
How Pond Clear clears algae out of ponds and stock tanks, and how to apply it.
What it does
Clear water. Thirsty livestock.
Eliminates algae fast
Eliminates the floating green "pea soup" bloom and the stringy mats that clog ponds and tanks.
Ponds, lakes, and stock tanks
Works in farm ponds, lakes, and stock tanks. The one exception is any tank sheep drink from.
Livestock drink more
Cleaner, more palatable water helps livestock drink more.
Before you treat
Eight rules for using copper sulfate safely.
Copper sulfate is effective and it's strong. Follow these and the product label every time. Section and alkalinity guidance attributed to Oklahoma State University Extension.
- 1
No sheep. Goats: call us first.
Sheep are very sensitive to copper and can be poisoned by it. Never use Pond Clear in any water sheep drink. Oklahoma State University Extension also advises against copper sulfate around goats, so goat owners should check with us before using it.
- 2
Treat in sections
When a lot of algae dies at once, it pulls oxygen out of the water and can suffocate fish. Oklahoma State recommends treating no more than 1/4 of the pond surface at a time, working out from the shoreline in bands so fish can move to untreated water, and waiting 2 to 3 weeks between sections. That's stricter than the label's limit of half the water body, 10 to 14 days apart.
- 3
Test the water first. No koi or trout ponds.
Copper is much more toxic to fish in soft, low-alkalinity water. The label warns that alkalinity under 50 mg/L, pH 6.5 or lower, or low dissolved organic carbon raises the risk, and Oklahoma State says not to apply it when total alkalinity is below 40 ppm. Never use it in ornamental fish ponds or aquaculture systems holding koi or trout. Striped bass are also highly sensitive.
- 4
Treat early, in warm, clear water
Apply in late spring or early summer when algae first appear, with the water clear and above 60°F. Where ponds freeze, finish treating 6 to 8 weeks before freeze-up so dead algae doesn't rot under the ice.
- 5
Protect your eyes and skin
Danger: corrosive. Pond Clear causes irreversible eye damage and is harmful if swallowed, inhaled, or absorbed through skin. Keep it out of your eyes and off skin and clothing, and keep it away from children.
- 6
Re-treat stock tanks after each refill
The effect wears off, so a stock tank needs treating again each time it's refilled.
- 7
Go easy on metal tanks
Copper sulfate is corrosive. Expose steel tanks and fittings only as long as needed.
- 8
Algae only
It does little against rooted pond weeds. Make sure the problem is actually algae before you treat.
How much you need
2 gallons per surface acre.
Measure the water's surface, not its depth. Then split the pond into four sections and treat one at a time, working out from the shoreline, 2 to 3 weeks apart. Pour the measured amount in at several points; it dissolves and spreads through the water within hours.
Public waters: check with your state pesticide agency before treating. A permit may be required.
Stock tanks: call (833) 247-4832 and we'll size the dose to your tank. Re-treat after every refill.
- Each 1/4 section
- 0.5 gal
- Whole pond, all four sections
- 2 gal
- Time to cover the pond
- 6–9 weeks
- Product cost at tote price
- $64.40
Four sections, 2 to 3 weeks between each. Test alkalinity first and skip treatment below 40 ppm.
Label & safety data
Questions
Pond Clear FAQ
What is Pond Clear?
Pond Clear is AgriTec's copper sulfate algae treatment for farm ponds, lakes, and stock tanks. It eliminates algae blooms fast, including the floating green "pea soup" type and the stringy mats that clog ponds and tanks.
How much Pond Clear do I need for my pond?
The rate is 2 gallons per surface acre of water. Treat no more than 1/4 of the pond surface at a time (Oklahoma State University Extension), so a 1-acre pond takes about half a gallon per section, 2 gallons across all four.
Is Pond Clear safe for livestock?
Cleaner water helps cattle and other livestock drink more, but never use Pond Clear in any water sheep drink: sheep are very sensitive to copper and can be poisoned by it. Oklahoma State University Extension also advises against copper sulfate around goats, so goat owners should call AgriTec before using it.
Will copper sulfate hurt the fish in my pond?
It can if it's misused. Dying algae pulls oxygen out of the water, so treat no more than 1/4 of the surface at a time, working out from the shoreline, and wait 2 to 3 weeks between sections (Oklahoma State University Extension). Copper is also more toxic to fish in soft water: don't apply it when total alkalinity is below 40 ppm. Never use Pond Clear in ornamental fish ponds or aquaculture systems holding koi or trout.
Can I use Pond Clear in a stock tank?
Yes, except any tank sheep drink from. The effect wears off, so re-treat each time the tank is refilled, and because copper sulfate is corrosive, keep steel tanks and fittings exposed only as long as needed. Call us at (833) 247-4832 for a rate sized to your tank.
Does Pond Clear eliminate pond weeds?
No. Pond Clear is for algae. It does little against rooted pond weeds, so confirm the problem is algae before treating.
Not sure it's algae?
Send us a photo. We'll help you sort algae from weeds.
Talk to an AgriTec agronomist about your pond, the livestock drinking from it, and how much Pond Clear you need.