Algae carpets on the water surface: act now!

We are constantly being asked by pond owners for advice about how to deal with the problem of algae carpets on the water surface. These green, almost foamy carpets either float like little algae islands on the water surface or gather around the edge of the pond like green lace.

These are green algae and they need to be treated the same way as the more familiar thread algae. Phosphate deposits allow them to grow and then they trap air to float on the water surface (article tip: Algae in Sight: Pollen and Blossoms as Growth Engines ).

Because these algae are easier to reach than many other types of algae, the starting point is ideal. Instead of treating the algae with an anti-algae agent (which would mean releasing the bound nutrients into the water) the layers can be mechanically removed with a catch net or a sludge suction cleaner. This way not only the algae but also the absorbed nutrients in them will disappear from your pond.

Should there be thread algae or other patches of green algae in the deeper water zones, you can sprinkle this area directly with JBL AlgoPond Direct . The algae will decompose within a few minutes. Stubborn areas need to be treated again at intervals of 48 hours. You can net a part of the dead algae off the water surface. Firmly anchored algae will die off under water. They won’t float upwards, but will become greyish and become broken down by bacteria.

Don’t forget to bind the released nutrients afterwards with JBL PhosEX Pond Direct (please take the carbonate hardness into account) to avoid to shifting the problem and ending up with floating algae.

© 26.05.2016
Matthias Wiesensee
Matthias Wiesensee
M.Sc. Wirtschaftsinformatik

Social Media, Online Marketing, Homepage, Kundenservice, Problemlöser, Fotografie, Blogger, Tauchen, Inlineskating, Aquaristik, Gartenteich, Reisen, Technik, Elektronische Musik

About me: Seit Teenagerzeiten mit Aquarien in Kontakt. Klassische Fischaquarien, reine Pflanzenaquarien bis hin zum Aquascape. Aber auch ein Gartenteich und Riffaquarien begleiten mich privat im Hobby. Als Wirtschaftsinformatiker, M.Sc. bin ich als Online Marketing Manager bei JBL für die Bereiche Social Media, Webentwicklung und der Kommunikation mit dem Anwender der JBL Produkte zuständig und kenne die JBL Produkte im Detail.


A word about cookies before we continue

The JBL Homepage also uses several types of cookies to provide you with full functionality and many services: We require technical and functional cookies to ensure that everything works when you visit this website. We also use cookies for marketing purposes. This ensures that we recognise you when you visit our extensive site again, that we can measure the success of our campaigns and that the personalisation cookies allow us to address you individually and directly, adapted to your needs - even outside our website. You can determine at any time - even at a later date - which cookies you allow and which you do not allow (more on this under "Change settings").

Are you over 16 years old? Then confirm the use of all cookies with "Noticed" and you are ready to go.

Choose your cookie settings

Technical and functional cookies, so that everything works when you visit our website.
Marketing cookies, so that we recognize you on our pages and can measure the success of our campaigns.