and Anabaena. The product also helps to accelerate the decomposition of excess organic material.

The effect of PondRelief® is greatest when there are good oxygen levels, as the bacteria use oxygen to break down nutrients and organic material. It is therefore a good idea to use PondRelief® together with aeration equipment, to ensure that the micro-organisms have optimal conditions.

PondRelief® is a biodegradable, env-ironmentally-friendly product that is non-toxic to humans, fish and other aquatic animals and plants.

Main uses: • Biological control of filamentous

algae• Reduction of available nutrients• Preventive maintenance of

bodies of water• For lakes, ponds, water hazards

and irrigation tanks Advantages: • Fast-acting, natural solution• Combats filamentous algae,

reduces odours and increases water clarity

• Biodegradable and non-toxic to humans and aquatic plant and animal life

• Easy to use – packed in practical, water-soluble sachets (Solupak)

PondRelief® is a natural, non-toxic, microbiological product that effec-tively combats filamentous algae in lakes and ponds with low water flow. Filamentous algae can be a problem in many nutrient-rich lakes, where dense mats of blanket weed may result in poor oxygen levels and squeeze out the lake’s beneficial plants. Lack of oxygen in the water leads to fish death, odour and an increased release of nutrients from the lake bottom. The presence of filamentous algae also reduces a lake’s aesthetic value and its recreational possibilities in relation to fishing, swimming and sailing.

When PondRelief® is added, microor-ganisms quickly spread in the water and help to absorb excess and lea-ched-out nutrients. The nutrients become bound to the microorganisms, and thereby make their way into the lake’s food chain. This reduces the nutrients available for the algae, which means clearer water and less risk of algal blooms. Regular dosing with PondRelief® throughout the algae growth period will maintain a high biomass of microorganisms, which will restrict the level of nutrients available to the algae.

PondRelief® is effective against fila-mentous algae such as Cladophora, Rhizoclonium, Spirogyra, Vaucheria and Ulothrix, and has a smaller effect on unicellular algae such as Microcystis

Bro-Bålsta Golf Club 03.06.2004, with heavy growth of filamentous algae

Bro-Bålsta Golf Club 23.06.2004

Before

After

Fast-acting control of filamentous algae in lakes and ponds with low water flow

w w w . e m a r k e r . d k T e l . + 4 5 7 4 6 7 0 8 0 8

GroGreen® is a registered Trademark belonging to E. Marker A/S

E. Marker A/SPadborgvej 3, Bov

DK-6330 Padborg Tel. +45 74 67 08 08

Fax. +45 74 67 08 90info@emarker.dk

PondRelief®

Biological Control of Filamentous Algae

Distribution:

E. Marker A/SPadborgvej 3, Bov DK-6330 Padborg Tel. +45 74 67 08 08Fax. +45 74 67 08 90info@emarker.dk

Our goal as a supplier is:To provide the best organic products for natural, eco-friendly care of gardens, parks and golf courses with a minimum of pesticides.

Contents: A mixture of six different bacterial cultures – more than 1012 (one bil-lion) microorganisms per sachet (450 grams). The bacteria are comprised of microorganisms that naturally occur in lakes and watercourses.

Pack sizes:PondRelief® is available in two pack sizes: • 200 gr - 20 sachets per box

(enough for 40,000 litres)• 11.25 kg bucket of 25 x 450 gr

water-soluble sachets (Solupak)

When should PondRelief® be applied?PondRelief® should be applied at the start of the algae’s growth season, in early spring (April). After that it should be applied regularly throughout the growth season, which usually lasts until the end of September, depending on weather conditions.

•Theproduct’sefficiencyishighestatwater temperatures above 13º C•TherecommendedwaterpHisbet-ween 5.5 and 8.5Instructions for use:

The effect lasts for approximately one month under normal conditions. Periods of warm, calm weather provide optimal growth conditions for algae; under these conditions, it may be necessary to apply PondRelief® more often than specified above, preferably every 2-3 weeks.

General precautions:• The product requires no special

precautions during application• Keep warm, dry and out of direct

sunlight. Protect from frost• Keep away from children and ani-

mals• May cause harm if the product is

consumed• Do not inhale• May cause irritation of skin and

eyes

Clear water without the use of che-micals

FACTS:Basin trials of PondRelief® in 2007, in conjunction with tests at Billeddam pond in Gråsten Palace Gardens and on Bro Bålsta Golf Course in Sweden, have shown that PondRelief® is an effective means of combating filamen-tous algae. In tests conducted by aquatic biologist Carsten Bjørn, PondRelief® reduced levels of filamentous algae by approxim-ately 75%.

Water depth Application Frequency Dosage

Less than First application Every 30 days 300g/100m2 water surface

1 metre Maintenance Every 30-60 days 120g/100m2 water surface

More than First application Every 30 days 500g/100m2 water surface

1 metre Maintenance Every 30-60 days 200g/100m2 water surface

Before: 4 July 2005

Billeddam, Gråsten Palace Gardens

PondRelief® is applied by sprinkling the product uniformly across the enti-re surface of the water. The product may be applied from a boat, or from the bank. The Solupak sachets can be thrown onto the water surface from the bank. • Handle with dry hands or gloves• Distribute the powder evenly

across the entire surface area of the water

Dosage:

After: 17 September 2005

Billeddam, Gråsten Palace Gardens

microscope photograph of filamentous algae