Coptrol approved for use banner APPLICATIONS

Coptrol Application Rates to Control Algae

Easy to mix and use

Because Coptrol is a non-corrosive viscous liquid, it is really

easy to measure, mix and apply.

Once diluted it can be applied from horticulture sprayers or

even a knapsack spray.

For smaller storages it can be applied from the bank and it can even be dripped directly in high volume treatments such as flood irrigation.

Before treating with Coptrol, calculate the volume of the
body of water. Do this by measuring the surface area and
multiplying it by the average depth down to 1 metre (you
can ignore depths below 1 metre).
Learn how to calculate the volume of water.

The best application method is by spraying using a 1:10
or 1:20 Coptrol/water dilution. For the best result, apply
on a sunlit, wind-free day when algae first appear.

Where the water is heavily infested with algae, it is advisable ‑ where practicable ‑ to remove clumps of algae with a rake or net before applying Coptrol. In really heavy infestations it may be necessary to apply a second treatment after 10‑15 days.

Coptrol can be used wherever algae pose a problem or cause

a nuisance.

General Application Rates

The rate of use depends on the degree of infestation. The kinds of algae present and the depth of water to be treated.

To identify algae see our website algae.info

Tanks and troughs

2-5 mL Coptrol per 1000 litres of water.

Dams, ponds, water impoundment

2-5 litres Coptrol per 1000 square metres surface or per million

litres of storage water.

Free floating algae

(Euglena, Microcystis, Aphanizomenon, Oscillatoria, Dictyosphaerium and Anabaena) require treatment with

Aphanizomenon

Dictyosphaerium

Euglena

Microcystis

Oscillatoria

Coptrol of only 0.2 mg/litre of copper in the water. In practical terms this is equivalent to only 2 mL Coptrol per square metre of surface or 2 litres of Coptrol per million litres of water.

Note: 1 square metre is approximately equal to 11
square feet

Filamentous algae

Chara

Chlorella

Cladophora

Hydrodictyon

Phormidium

Oedogonium

Spirogyra

(Spirogyra, Chlorella, Hydrodictyon, Cladophora and Oedogonium) require treatment with Coptrol 5 mL per square metre or 5 litres per 1000 square metres surface or per million litres of storage water.

Note: Chara and Phormidium are more resistant
and may require treatment with Coptrol in the range
of 0.5 mg to 1.0 mg/litre - 5 - 10 litres Coptrol per
1000 sq. metres of surface area.

In recurring cases it is worthwhile having algae identified to assist in accurate control.

Use this link for detailed dose rates for specific applications

Higher rates are generally beneficial, because there is
NO WASTAGE of Coptrol. It remains active in the water
until algae actually use it up thereby inhibiting further build
up of algae.

For best results ensure that water temperature is at least 16°C (61°F).

If fish are present read Coptrol use in aquaculture

Material Safety Data Sheet

Coptrol Bibliography

Coptrol Frequently Asked Questions

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