How about a round dowel with some of that caulking you see on TV that sticks under water. Not sure if the acid would affect the adhesive but it’s a cheap try.
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How about a round dowel with some of that caulking you see on TV that sticks under water. Not sure if the acid would affect the adhesive but it’s a cheap try.
Hydrometer with bit of rubber or plastic tube on end to suck it, might work.
Good call Ray.