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Will freshwater kill barnacles?

Community Answer

No, it will not.

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How large can barnacles grow?

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Some can grow as large as seven centimeters or more.

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Can I use oxalic acid to clean barnacle spots on a fiberglass boat?

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According my experience, oxalic acid works only for algae and microscopic organisms, not for barnacles.

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Can I paint an aluminum boat?

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You sure can--consult Paint an Aluminum Boat .

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