Help find the leak

[clives]

Greetings,
I appear to have a hole/leak somewhere along this level. Every time that I fill the pond it drops to this level.

I don't see any bubbles, any ideas how to find the leak??

Thanks
Clive

 

[GBBUDD]

Not sure but that liner looks like pvc or something else. Not EPDM or hdrpe. That would be my first step is it worth fixing ?

 

[clives]

Not sure but that liner looks like pvc or something else. Not EPDM or hdrpe. That would be my first step is it worth fixing ?

Hi
Until the winter when I can change it, to avoid disturbing frogs/newts,etc. I will need to repair it.

 

[GBBUDD]

here is what you do for epdm https://www.gardenpondforum.com/threads/seaming-epdm-liner.26807/

if your hole is small they do sell little patch kits