well, i respect capta's opinions allot. truth told, i have never used acid as i was warned not to by the old timers at the PJ's yard many years ago. i also have befriended many on the great lakes and when i see another teak deck in great shape i'll inquire as to how the maintain them. everyone used plain water or mild soap and water, nothing else. they also would wash every day. a clean boat is so much nicer to sail.
aeolus's decks are real. 1 1/4 thick, still today.
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the captain of the 75' sq meter , bacchant, was a good friend and teacher for me. bacchant was the sweetest vessel on the great lakes for many decades. every detail was tended to. the captain had been the head of service at PJ's before captaining bacchant.
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i capta says it's ok, then i'd try it. get your decks looking good and then just keep them there.
to you power washer guys, your bad, very bad. need to be pushed off a dock