As I've discovered, not all "sea hares" are the same. I ordered two before I realized this is what I wanted:
http://cgi.ebay.com/Awesome-GREEN-BA...QQcmdZViewItem
The seller seems knowledgeable. I'd ask him about your hair algae to find out.
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"We are what we repeatedly do. Excellence, then, is not an act, but a habit." -- Aristotle
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