Algae Control

When algae become a nuisance

Algae are a natural component in every body of water, including garden ponds. As one of the  most important links in the food chain, they form the basis of life for many organisms which inhabit garden ponds and produce vital oxygen. Consequently, the aim should not be to achieve an "algae-free" garden pond, but only to avoid large-scale algae infestations.

Temporary slight clouding of the water by suspended algae or light thread algae growth at the edge of the pond are completely normal and make sound biological sense. Mass proliferations of algae mean that the pond has lost its biological balance, however. The primary cause of never-ending “algae bloom” is an oversupply of nutrients. Algae bloom occurs when a pond takes in too many nutrients or does not consume enough nutrients.

Prevention is better than cure

This time-honoured adage on human health is equally applicable to the garden pond. The right care prevents algae from becoming a problem.
The timely use of Dennerle Anti-Algae Phosphate-Ex offers particularly effective protection. Anti-Algae Phosphate-Ex removes algae's primary nutrient, phosphate, thus depriving algae of their essential nutrient base. They subsequently starve to death.
The less phosphate the water contains, the less algae will grow. Anti-Algae Phosphate-Ex is able to lower the phosphate content to under 0.03 mg/l, thereby effectively preventing large-scale algae infestations. Anti-Algae Phosphate-Ex combats the cause of algae infestations, not just the symptoms!

Making green water clear again

Water acquires a green discoloration as a result of tiny suspended algae which are barely visible to the naked eye. Suspended algae can only multiply on a mass scale if they have sufficient nutrients at their disposal, however - particularly phosphate. Suspended algae can be combated with algicides or with the aid of a UV clarifier.

Important: Anti-Algae Phosphate-Ex should be used a few days after applying agents to kill off algae, in order to immediately bind the phosphate which is released from the dead algae - phosphate being the primary cause of such infestations. Otherwise, a new algae infestation may occur after only a few weeks. When using UV clarifiers, unless the same precautions are taken the problem will generally shift from suspended algae to thread algae, which will be very grateful for the released phosphate and may well "explode" into life.