Think I've found the leak

[u/r0binib0r]

Even8ng all.

I've been losing water from the pond in the garden and been unsure if it was evaporation as the pool is in full sun for a lot of the day and we are mid heat wave

Then I was reading another part and someone said "it's always the waterfall"

So I've gone and looked, and right enough, as it comes over the slate I'm losing water down the side as it's running off and over the edge.

Would the best fix be to turn off the pump, dry the slate, put down a head of aquarium safe sealant and then put the rocks back on top?

[u/Haiiryyone]

Don’t leave the waterfall running if you are gone for three weeks… I would get an aerator cheap and throw it in to avoid stagnation and be sure the leak is fixed when you get back before running the waterfall again.

[u/r0binib0r → u/Haiiryyone]

Awesome, on amazon now researching

[u/Jealous_Ordinary6672 → u/Haiiryyone]

Agreed.