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Do I need a filter in my wildlife pond

Hi, I am new to this site and gardening. Have recently moved to a new home and am in the process of doing a wildlife pond which is 2.5m x 1.5m x 0.5m depth. i am having a small cascade waterfall going into the pond and will be adding various pond plants too i will be having a bog garden and also a wild flower garden.... what i need to know is do i need a pond filter and if i do would i get one with a uv lamp or would a uv be detrimental to good bacteria beneficial to the wildlife using the pond ie. newts, frogs, toads etc Any help/advice would be much appreciated


  • marshmellomarshmello Posts: 683

    No need for a filter in a wildlife pond, so long as you keep at least 60-70% of the surface water in shade.

    This thread below may have some useful information with regards to water quality.

  • theres no need for one as mentioned by mello but as you are making a waterfall and require a pump anyway just run that into a home made chamber filled with floss and filter media made from a plastic tub with holes drilled then you could always have fish as an option good luckimage

  • I hope you get a pump with a very fine mesh you dont want all the underwater wildlife getting sucked up and churned up in the impeller, there the core to your wildlife pond.

  • If you've not finished the build how about running the cascade from it's own reservoir and having the pond separately? Daphnia keep my wildlife ponds clear but they won't survive a pump or fish, although they thrive despite a bit of use from mallards! they also do the job in the open, sunny amphibian ponds with little shade..

  • Hi,

    Hi, Please excuse the ignorant question but I don't understand using a separate reservoir?  Surely if the water isn't falling back into the reservoir as it would into the pond then this water source is going to dry up?

  • nutcutletnutcutlet PeterboroughPosts: 26,878

    Debbie, this thread is 3 and a half years old. I don't think the people concerned are around now.image

    If you have a pond question I'd start a new threadimage

  • Hostafan1Hostafan1 Posts: 33,339

    I have to say: I was wondering why it wasn't a new thread rather than raising the dead.

  • FairygirlFairygirl west central ScotlandPosts: 49,210

    I've had fish in wildlife ponds Jo - in a really big pond they have little influence, especially if they're fed a bit, and even in a little pond, it can be fine if there's only one or two small 'uns  image

    It's a place where beautiful isn't enough of a word....

  • just joined, not sure how i'm coming across these old threads, but its interesting reading non the less.  I will start a new thread though, thanks for the advice


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