Tomhanaway Posted January 1, 2018 Report Share Posted January 1, 2018 My boat has a non removablele 40 gallon waste water tank. I do have access through an eight inch access hole at top of tank. Given that I can’t remove the tank to rotate ir, is there a method to treat it. It appears The leak is at seam near the bottom of tank. would application with a paintbrush work? Quote Link to comment Share on other sites More sharing options...
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