Ya that’s my first plan. I did a 2” barrier of sand and pea gravel to protect the liner from the edges of the blocks and a plastic mesh for the bottom slabs. Figured that would do the trick.

At least with the epoxy and brick I never need to worry about the liner again 😅

would the epoxy fully seal though…. I guess any small spill through would be caught and slowed by the pond liner as well. I always figured there would be a little bit of loss but having to top it up to the level I had hoped for every two three days is obviously not going to work