Fish pond leak

[andreajoe]

my fish pond has a leak in the bottom. The pond is some sort of rigid black plastic or polypropylene.  How can I fix the leak?  The hole is about 8cm by 6cm and has dirt underneath.

[Kermit]

That sounds like a big hole @andreajoe!

You probably want something like this - https://www.bunnings.com.au/crommelin-1l-black-pond-sealer_p0960194 - and this https://www.bunnings.com.au/crommelin-100mm-x-10m-reinforcing-fabric_p1070654

Can you dig the pond out?

An alternative might be to forget about the hole and just use a new liner - https://www.bunnings.com.au/our-range/garden/garden-decor/garden-water-features/flexible-pond-liners

[Jason]

Welcome to Workshop @andreajoe. It's lovely to have you join us. I trust you will receive lots of helpful advice and inspiration for your projects from our community members. 

You might like to share a photo of your pond - it would help our community members see what you were dealing with and provide more specific advice. Hopefully @Kermit's suggestions also help get you started on a solution. 

Please let me know if you ever need a hand getting the most from the site. 

All the best,

Jason

[andreajoe]

The hole is blocked by rocks and a piece of cement installed by previous owner.

When it is not so tropical we will pull the existing pond out and install a new lining.

I will report back when it is done.

Thanks again Kermit

Sorry that shousld be " or install a new lining"

[Jason]

Good luck @andreajoe. Please let us know how you go.

Jason

[Kermit · Accepted solution]

No probs @andreajoe.

Another option is just replace the pond - https://www.bunnings.com.au/search/products?q=pond&facets=BrandName%3DAquapro

[Kermit]

BTW, this suggests putting sand in the hole before the pond carcass to ensure rocks don't perforate it - https://www.bunnings.com.au/diy-advice/outdoor/paths-and-landscaping/how-to-build-a-garden-pond

[Ecojon]

You could fill the hole with rapid set concrete, then use crommelin watersealer {grey} over the top?