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Coptrol specific use
Does Coptrol Effect Plants
How to Control Algae in Aquaculture
How to Control Algae in Dams and Potable water
How to Control Algae in Drinking Water (Potable Water)
How to Control Algae in Farm Dams and Ornamental Ponds
How to Control Algae on Golf Courses & Greens
How to Control Algae in Household Potable (Drinking) Water Tanks
How to Control Algae in Industrial Ponds
How to Control Algae in Irrigation Systems
How to Control Algae in Potable Drinking supplies for Livestock
How to Control Algae in Raceways and Irrigation Channels
How to Control Algae in Rice Crops
How to use Coptrol to kill Algae in Waterways and Irrigation Channels
Algae in irrigation channels a persistent problem!
There are more than 17000 kilometres of earthen irrigation channels in Australia all with varying amounts of plant life and weed growth on the banks and in the water way. Decayed vegetation from nearby trees and decayed foliage from the channel banks as well as the run off from adjacent
farms provides plenty of aquatic nutrients. When combined with
abundant sunlight and high summer temperatures, blooms of algae
are a frequent occurrence.
Algae and Algal blooms
There is no easy definition of an alga. Algae are generally
microscopic organisms, are generally thought of as simple aquatic
plants which do not have roots, stems or leaves and have primitive
methods of reproduction.
For further information see our
Algae can impede water flow, create an environmental nuisance and may even be toxic to humans and stock. Successful eradication of algae depends on the correct identification of the species, and the use of an algaecide that does not harm aquatic animals, livestock, plants, humans, and is specific to algae and no other plant life.
chelated copper compound
with a low level of toxicity. Its unique ability to kill algae is because algae actively seek out
for its nutrient value and they absorb it throught their cell walls. Digestive enzymes within the algae cell break down
which releases the copper held inside the chelate. Because the algae cells gradually accumulate
, there is not an immediate toxic effect on algal cells. Generally it takes between 36 to 48 hours for results to become apparent. This rate of deterioration is dependent on the dose rate used and level of algal concentration at the time of application.
What are the dosing options?
Dosage rates depend on a number of factors including water
volume, flow rates, algal concentration and dosage methods.
There are three practical options available:
Single dose point
Multiple dose point
RCI does not recommend the use of Coptrol if the single dose
Multi dose point method
The multi point method is used when there are relatively
rapid flow rates of water. Subject to being able to apply the
product in a uniform and reliable manner, the rate of application
should be 2ml per 1000L (cubic metre) of water continuously for
It should be noted each system has different characteristics which
may influence the efficiency of this dosage recommendation. For
example undertaking multi point dosing after the accumulation of
high levels of algae have occurred will significantly reduce the
effectiveness of this type of application and may require higher
application rates over a longer period.
This method is dependent on the ability of the operator to be able
to pass sufficient
over the surface of the water in the channel.
This approach is only feasible with either a static or slow moving
channel system and requires the operator to be able to apply Coptrol
evenly over the surface of a channel. In our experience this system
is more cost effective and reliable than the multi point dose method
and can be used to prevent and treat problem algal developments.
The suggested rate of application in this situation is 5ml per 1000L
(cubic metre)of water. This will require a minimum of 48-36 hours
contact time. In extreme conditions rates can be increased to 10ml
per 1000L (cubic metre) of water.
Recommended dose rates
If algae is a problem in a waterway or irrigation chanel follow this 5 step method to keep your waters clear and bright.
First identify the algae present. If you are not certain visit
. This site enables you to identify all the common
algae in Australia.
Now calculate the volume of water to treat. Ignore depths below 1
metre. We have a page which explains the methods used to
determine the amount of water to treat. if you need assistance see
How to calculate the volume of water
to treat with
Next calculate the amount of
needed. An easy way to
If you are using the multi dose point application.
• Use 2 mL of
per 1000 Litres (1 cubic metre) of water. That is equivalent to 2 Litres of
per 1000 square metres of surface area continue the application without interruption for 48 hours.
b) If you are using the Drip Spray application
• Use 5 mL of
per 1000 litres of water (1 cubic
metre) or 5 Litres per megalitre of water. In extreme
conditions the rate may be increased to 10 mL per cubic
metre of water. Continue the application without
interruption for 48 hours.
Dilute the required amount of
using a 1:10 or even a 1:20
The best application method is by spraying. Apply on a sunlit wind
free day when algae first appear. If this is impractical look at our
If you still need help call us at no cost to you.
where our free call numbers are displayed.
Or you can email us using this
There are advantages and disadvantages with both methods of application, on balance we have found the drip spray method to be most efficient.
Frequently Asked Questions
and Environmental Safety
Material Safety Data Sheet
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