4300 Gallon Plywood Build (3600+ Take 2)

How can you be sure the leak isn't submerged already, but not leaking yet just because there isn't enough pressure/depth to force water out of it? That would mean its a very small hole, if the surface tension was enough to keep it from leaking until sufficient pressure was built up over it.

I guess if you're planning on re-coating the tank from the depth it leaks at, all the way down, its a non-issue, just not clear on how you're going to fix it I guess.
 
I plan to brush on a 12" - 18" coat all the way around the tank at the level that I find the leak starting. Half above/half below. I could do the whole tank, but then I'd never be certain where the leak is/was at.

You are correct that there could not be enough pressure. My next solution if the above doesn't resolve it is to coat the distance between the new coat and the 6" up on the wall where I stopped when I coated the bottom. Both versions will be brushed not rolled as to apply a thicker coat and to give me the chance to go over the entire wall in close detail.
 
Sploke said:
How can you be sure the leak isn't submerged already, but not leaking yet just because there isn't enough pressure/depth to force water out of it? That would mean its a very small hole, if the surface tension was enough to keep it from leaking until sufficient pressure was built up over it.

I guess if you're planning on re-coating the tank from the depth it leaks at, all the way down, its a non-issue, just not clear on how you're going to fix it I guess.
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This thought crossed my mind as well.
 
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