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Best chemical rust remover for inside a tank
OK, I have never really needed to deal with significant rust removal on any tanks but with the gift of a pair of steel 72's, I want to remove the flash rust to look for any pitting.
I have heard phosphoric acid is a good choice followed by copious rinsing and then o2 cleaning to remove any acid residue.
I'd like to do the quick rust check prior to sending them for hydro to catch an obvious flaw. generally speaking - they are in excellent condition considering they are older than I am. (hydros in 1970)
Anything better to use?
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