Clear pond | Green pond water and floating algae control tips
Green ponds can be an eyesore for any pond enthusiast. Float algae are often the culprit of this green color, but fortunately, there are several ways to address this problem and make your pond clear and healthy again.
All about pond clear
- Green pond: how is green pond water created?
- What causes the green pond water?
- The water of my new pond is green
- Mijn koivijver is troebel
- Float algae: Harmful, including to pond plants
- The water of my pond with pump or fountain is turbid
- Clear pond water
- Vijverwater kleurt na de winter groen
Green pond: how is green pond water created?
A murky pond can have several causes, including excessive fish stocking, not enough pond plants, warm weather and the presence of waste products. When the self-cleaning ability of the pond water decreases, pollutants can accumulate and stimulate the growth of floating algae, which can cause the pond to look green and cloudy and disrupt the normal flora and fauna of the pond.
Combination of pond plants
A combination of pond plants in the pond is ideal. By combining the functions of the pond plants, the pond will naturally remain healthy and clear without you having to do anything about it. - Simon
Hardy aquatic plants from our own aquatic plant nursery
What causes the green pond water?
The main cause of green water in your pond is that floating algae grows in the water, giving the water a green color. This can encourage the growth of other aquatic plants in the pond and make the pond look unattractive. In addition, algae growth can lead to a lack of oxygen in the pond, which can lead to the death of fish and other animals in the pond.
The water of my new pond is green
Dit gebeurt vaak in het begin bij het inrichten van de vijver. De vijver is nog aan het werk om biologisch evenwicht te krijgen en zweefalgen te bestrijden. De natuur gaat dit zelf rechttrekken, mits er voldoende vijverplanten aanwezig zijn en er bacteriën aan het water zijn toegevoegd. Zij zorgen dat de vijver helder wordt en zal blijven.
Mijn koivijver is troebel
Troebel vijverwater in een koivijver kan komen doordat de koikarpers de waterplanten overhoop halen. Het zijn echte wroeters. Een oplossing is een bodem zonder planten of vijversubstraat. Vind je dit te kaal? Dan is een drijvend planteneiland, wellicht een goed idee, waarbij de vissen de planten niet meer kunnen opeten.
Float algae: Harmful, including to pond plants
In addition to the fact that the presence of floating algae is harmful to pond animals, it may also lead to declining growth of oxygen plants, marsh plants and water lilies. Float algae is a food competitor of the oxygen plant so when the floating algae becomes dominant, the oxygen plant will die. This only increases the growth of floating algae. Float algae can also harm water lilies and marsh plants because the plants receive less sunlight when the water is turbid. This can lead to a decrease in underwater leaf formation. Turbid water can reduce the amenity value of the pond, as the underwater life such as pond fish less visible. It is therefore important to take action as soon as possible to restore pond clarity and limit the growth of floating algae.
The water of my pond with pump or fountain is turbid
Troebel vijverwater kan veroorzaakt worden doordat de filterpomp te hard aan het werk is en hierdoor alle planten door elkaar blaast. Die verliezen hierdoor plantdelen die door het water gaan zweven en het water troebel maken. Dit kan ook voorkomen bij een fontein in de vijver. In beide gevallen adviseren we om het apparaat eerst een stand lager te zetten en te kijken of dit helpt. Is dit niet voldoende, kun je de pomp of fontein uitzetten. Lees meer over een vijver zonder pomp.
Clear pond water
There are a number of aspects you can consider that will ensure clear pond water:
Oxygenator Plants
Provide plenty of oxygen plants in the pond. These plants absorb nutrients and help filter the water. When the water threatens to turn green, place additional oxygen plants.
Oxygenator Plants
Pond water cleaning
Regularly remove leaves, dead plants and other organic material from the pond to prevent it from rotting and contaminating the water.
Pond Fish
Choose your pond fish with care. Certain fish kept in the pond tend to dig a lot in the bottom or feed on oxygen plants, which can lead to murky water in the pond. Therefore, it is advisable to select fish that do not have these characteristics, such as goldfin or the comet tail.
Pond substrate
Choose the right substrate at the bottom. A pond with a mud bottom makes the water very nutrient-rich, giving algae a chance to grow.
Pond substrate
Pound block and pound enzyme
Remove incipient algae growth from the pond using a scoop net. If the algae growth has already spread too far, geuse an anti-algae agent, Pond Block and Pond Clear Zyme When algae growth did occur.
Pond Bacteria
Make sure your pond stays clear by twice a year, in the spring and in the fall, pond bacteria to the pond water.
Pond bacteria
Vijverwater kleur na de winter groen
Dit kan inderdaad voorkomen na de koude wintermaanden, maar ook als er enkele warme dagen zijn en het daarvoor koud is geweest. De vijver ontwaakt uit de winterrust, planten lopen nog achter maar door de felle zon wordt het water wel warm. Dit werkt zweefalgen in de hand die het water groen kleuren. De natuur zal dit zelf rechttrekken. Zodra de waterplanten wakker worden, ze meer zon krijgen en weer gaan groeien, zullen zij – mits er voldoende zijn – zorgen dat de vijver weer helder wordt.
Frequently asked questions about pond clarification
How long it takes for a pond to become clear again depends on several factors, including the cause of the murky water, the size of the pond and the measures taken to address the problem. In some cases, it may be clear again within a few days or a week, while in other cases it may take several weeks for the water to clear.
Float algae cause green water in the pond and only grow when nutrients are present in the water. To prevent the growth of floating algae, it is important to make sure there are enough oxygen plants in the pond and make sure there are not too many fish in the pond. Using the right bacteria is also essential for a clear pond.
Simon van der Velde
Pond specialist and aquatic plant grower since 1986
Simon's vision is to let nature do its work in your pond. No need to buy all kinds of measuring equipment and water improvers. If the fish are swimming nicely and the plants are growing well, then the water in the pond is of good quality. With a good planting plan and the right approach, you can save a lot of money and maintenance, and ensure a clear, biologically balanced pond that becomes more beautiful every year.
