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Need help identifying algae
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12-23-2007, 12:26 AM
fkshiu
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Join Date: Sep 2005
Location: Vancouver, BC
Posts: 1,499
Hydroids are not easy to remove as they can come back no matter what you do to them. The only foolproof way I've found is the ol' hammer and chisel. I have also heard of people blowtorching them.
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