World domination could be being planned in your backyard right this instant and you wouldn’t even know until it was too late!

Ok, maybe that’s a little dramatic but invasive weeds CAN take over a dam or pond in a very short amount of time. Sure, the cosmetic issues that this causes suck, but what’s even worse is the impact the weeds could have on the plants and other life that you actually want in your dam. Duckweed, for example, can double in size every sixteen or so hours, which is great if you’re trying to grow it, but not so fab if the purpose of your pond is to house your little fishy friends.

Invasive weeds can sometimes choke an aquatic ecosystem in a matter of days and even slow growing ones will cause chaos if left long enough. Just ask *Jane (*not her real name), who’s pond was overrun to the point where her ecosystem was struggling to support the weeds let alone anything that she actually wanted in there. Our friends over at Water Quality Solutions helped a lady with a similar issue as well.

Weeds can appear for many reasons but, like any plant, they need water, sunlight and nutrients to survive. Generally they will initially acquire this by sucking up any excess that you have in your pond but as time goes on, they will start to steal from your fish and other plants.

Like with anything else, prevention is the best solution so ensuring your system is properly filtered and aerated is a must, but you should also ensure that you have enough good bacteria in your system to consume any excess nutrients that are not being utillised by your flora and fauna. You can do this by dosing your water body with a treatment such as our Biostim Nitrifying Bacteria and maintain your levels by ensuring your aeration/filtration runs consistently. It is also important to remember that you should only ever clean your filter and media with water from your pond so as not to kill friendly microorganisms with the chlorine and other chemicals found in tap water.

If you already have a weed problem, however, the best thing you can do to start with is manually remove them. You can dose and treat and even use aquatic herbicides all you want, but if even small amounts of weed survive, they’ll simply recolonise using their dead brethren as their nutrient source.

How you do this will depend on the type of water body that you’re trying to remove weeds from but as a general rule, you should be able to make a decent dent in your weed population with the use of either a sickle or a heavy duty cutter, in combination with a sweep and some biological augmentation to help support your ecosystem in fighting them off. Please be aware that this information is general in nature and should not be applied as a blanket rule. If you are unsure what is best for your water body, give us a call or get in touch via our contact page¬†and one of our friendly specialists will be happy to help,

Last but not least, once you’ve removed the offending weed, make sure you clean your aerator, filter and/or pump (if you use them) so they can run in top condition and keep up with a regular treatment such as Biostim liquid or pellets to help reduce nutrient load and therefore decrease the risk of re-infestation.