Ok, I have read and read and enjoy reading all about the build you have going on here. I do have a question for you, since you keep having leaks (because of difficulty finding pond armor) causing you to have to scuff and reapply, why did you not just spray in the pond armor? 10mil is thick enough for even more pressure than you will see from this build. Spraying is easier for a more fluent coat and I think you would have had less difficulty with making your build leak proof that way. I see you did acid etch the concrete sheets and taped the edges and soaked, all was right, I think your application was not smooth causing the leakage. just my two cents.