Join Date: Nov 2008
Location: Deale, MD
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Re: Environmental impact of Zinc/Magnesium Anodes
Actually zinc is quite toxic to marine life, right up there with copper. At 0.5 ppm everything dies. That is why it is used as a biocide in paints and it's part of why zincs stay clean. However, the area of zincs compared to boat bottoms is pretty small.
(when asked how he reached the starting holds on a difficult rock climbing problem that clearly favored taller climbers - he was perhaps 5'5")
"Well, I just climb up to them."
by Joe Brown, English rock climber
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