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5 Ways To Keep Mosquitoes Out Of Pond

Mosquitoes can be a real annoyance for any self-respecting pond owner. We all know that a good pond can be true feature of any garden, but unfortunately, in hotter climates, they can also be a real magnet for mosquitoes.

This has the potential to not only ruin your perfectly planned summer BBQs, but it can also cause some long-term damage to the pond ecosystem.

Mosquitoes adore the aquatic conditions in warm places, so garden spots are the perfect breeding ground for this annoying critter.

Thankfully, you don’t need to cower for too long, as there are ways to fight back against this menace.

If you want to find out about how to keep mosquitoes out of pond, then you’ve come to the right place, as we cover all the hints and tricks in this article.

Moving Water

One of the simplest and most effective ways of keeping mosquitoes out of garden ponds is by artificially stimulating the water.

Mosquitoes just love stagnant water, and they are likely to quickly breed and multiply in low flow conditions. On the other hand, if you add just a small current to your water, then the mosquitoes will be unable to hatch their larvae in the water, and you should not have a significant mosquito population problem.

There are a number of handy ways of increasing flow or turbulence in your water. For instance, you might consider installing a mechanical pump in your pond, as a way of increasing water circulation. You could also add an ornamental fountain. Not only would this add to the aesthetics of your pond, but it also acts as a protective measure against mosquitoes.

Even adding small air stones to your pond should help create more flow and lessen the chance of a mosquito infestation.

Plus, there are other knock on benefits of enhancing water-flow in your pond, as increased aeration can pull more dissolved oxygen into the water, which is good for most aquatic plants and pond fish.

Add Some Mosquito Killers

killifish by Tam Tam (CC BY-SA 2.0)

This is a very natural way of dealing with the problem of how to keep mosquitoes out of pond.

You can simply add some creatures to the ecosystem which love to snack on mosquitoes. By adding a natural predator to the mix, you will set up a new equilibrium in your pond environment which will likely see the amount of mosquitoes decrease.

It is particularly effective if you add fish species that target the resting mosquito larvae in the water. For example, you could look to add killifishes, topminnows and tadpoles to your pond, to act as a mosquito deterrent.

Be sure that your conditions such as the water chemistry, climate and other pond inhabitants are compatible with these types of fish before you add any new species. It is also worth noting that, contrary to their name, mosquitofish are not actually good at killing mosquitoes.

By introducing new fish species not only will you be able to deal with the pernicious problem of mosquitoes, but you get to add more color and variety to your community pond.

Use Chemicals

This is a more artificial route to take but it can be very fast acting and efficient in bringing large populations of mosquitoes under control.

However, the use of chemicals in your garden pond is not without risk. That’s because the ecosystem of your garden pond is actually in a delicate balance, and the fast introduction of a foreign chemical substance can throw this equilibrium well off track.

This could inadvertently cause damaging side effects to the health of other creatures or plants in the pond.

Under no circumstances should you use chemicals in ponds with fish.

If you do decide to go the chemical route, then you should use a wildlife-friendly insecticide.

These are specially formulated to minimize the damage they cause to other wildlife species in the pond. You should also carefully read the instructions before you apply any chemicals and if in any doubt, then you should make sure to consult a more experienced person.

Bacterial Insecticide

A bacterial insecticide may be a good alternative to traditional chemicals as they usually don’t harm the pond fish.

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For instance, you should look for any substances containing bacillus thuringiensis israelensis to target mosquito larvae.

Be aware though that bacterial treatments can harm the ‘good’ bacteria in your pond that are necessary for nitrogen cycling.

Get Rid Of Algae

Algae is usually the preferred food source of mosquito larvae in garden ponds, so by getting rid of your algae problem you may actually be depriving them of an energy source, and thus solving two problems for the price of one.

There are lots of effective treatments for getting rid of different forms of algae, but some of the most effective methods include manual scrubbing, chemical treatment and addition of certain plants.

If you can lower the amount of algae (visible or invisible) in your pond then you should see a noticeable decrease in the mosquito population as a result.

Let The Native Wildlife In

Often mosquito populations explode when native wildlife species, such as bats and birds and other creatures, are excluded from an ecosystem. Often these native species would naturally keep the mosquito populations in check.

As a result, you can really add to your pond by implementing conservation efforts and really making your pond an inviting, safe space for local species. This might mean allowing wildflowers to grow, placing food for native bird types, or just allowing your pond to run a bit wild and return to a more natural state.

This can have great long-term benefits.


Everyone acknowledges that mosquitoes can be a real pest. The question of how to keep mosquitoes out of pond in warmer climates is particularly pertinent.

Warm, stagnant water is the perfect breeding ground for mosquitoes, and a garden pond is like a caring nursery for mosquito larvae.

Thankfully there are some simple measures you can take to tackle this problem. For example, you can increase the water flow, introduce some natural larvae feeds, use wildlife friendly insecticide and get rid of their food supply by tacking your algae issue.

Aaron Boyd
Aaron Boyd

Hello, I’m Aaron Boyd, the proud owner and author behind Aqua Movement. I hope my article was able to answer your questions. If you want to learn more about me, click the home icon above.

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