Filamentous algae are string algae, resembling long strands of hair that attaches to rocks, plants, waterfall, basically any item in your pond. It doesn’t care. Excessive growth can remove essential oxygen that fish need from the water. It can, if left untreated, choke the pond and fish loss is inevitable. The nutrients in water are what algae thrives on. The addition of pond plants will create competition for these nutrients and guess who looses… The Algae. The plants will continue to thrive on these nutrients as the algae fades away! *Reminder… Try and remove as much of the algae as you can before treatment to minimize the amount of decay.
One natural way to prevent filamentous algae is to add Barley to the Pond. Bales, Pellets and now Liquid can be used in your system. These should be placed in an area where water flow exists. There is also Barley Pads where barley is injected into the filter media for your Biofilters! Barley releases an enzyme as it breaks down, preventing the algae to grow. Sometimes we have seen the Barley turn the water a bit tan-ish in color. This will go away within a few weeks or we use on our ponds & our Customers ponds’ what is called Activated Carbon. This helps establish Super Clean water quality. Activated carbon is able to absorb a large amount of organic solids. We also use the Carbon to remove the fish medications after our treatments are complete. Salt also aids in the suppression of Algae as well. See our article on Salt. See also our article on Activated Carbon. High pH and Phosphorous are leading causes of String Algae. Check these in you pond with your Test kit and add PH down followed by a Buffer to stabilize the pH in your pond. If you are reading high Phosphorous, use Phosphate Remover. (Place this in a filter media bag in the filter unit.)
NEW! GreenClean, a granular algaecide… don’t be alarmed by the word algaecide. It is a non-copper based algaecide. Your fish are not harmed. It works on contact! GreenClean works through oxidation and provides for immediate control of algae. Dead matter floats to the surface where you can use your skimmer net to remove the debris. This product poses no threat to the pond life or plants. I also recommend using the two partners in crime Algaefix and Ecofix.
“Although I have Barley in the pond, a good .3% salt in all our ponds and GreenClean used as needed, I also dose the ponds every 3-4 weeks with Algaefix and Ecofix. Along with my Beneficial Bacteria by my side, the Bacta-Pur Klear, Nutripack and Sludgebusters, Our water quality is Clear, our ecosystems are Healthy, and our fish are Happy!”
In addition, always use a sludge eating bacterium such as Clear Pond Fall/Winter Formula, Microbe-lift Pl or Spring Summer Cleaner or keep on the Bacta-Pur Klear, Nutripak, Sludgebuster routine that offers the full spectrum of “Benefical Bacteria” to breakdown and consume the organic matter. Bacta-Pur Sludgebuster is an excellent bacterium strain that works to breakdown this organic waste.