which anode

[derekh]

I have a boat which has ss props. when the tide is in I am in sea water and when the tide is out I am in fresh water. As there are anodes recomended for salt h2o and others for fresh water h2o which should I use. The sea water anodes I am at present using are virtually gone in one season. I am concerned that an extended season would result in gear casing damage.

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[BrendanS]

You need to stay with seawater (zinc) anodes. Freshwater (Magnesium) anodes will anodise rapidly in seawater.

If they are eroding in a season they are doing they're job. If you have ss props, then consider providing some additional or larger sized anodes as I believe ss props increase rate of anodisation.



<hr width=100% size=1>There is no such thing as "fun for the whole family."

 

[jimh]

Definitely stick with zinc! - not sure if many people make it through a whole season on a single set of anodes in any case - i know i don't.

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