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Old 02-14-2013, 03:29 PM   #25
Underway
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Join Date: Aug 2012
Posts: 741
The primary agent in most commercial hull (and Hypalon dink) cleaners is oxalic acid. It can be purchased in powdered form at most hardware stores as wood bleach. Mix your own. Don't believe I'd use hydrochloric acid on gel coat.
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