Urchins eat coralline algae, but not enough to keep the glass totally clean. I find most tools designed to clean acrylic tanks suck at their job. The Kent scrapers with the plastic blades suck. I tried one on my glass tank and the plastic blade doesn't seem to be flat enough because it won't even clear the soft film off the glass in a clean sweep. I have the long handled Kent scraper, maybe with a short handled one a person could apply more pressure and have it work better...?
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~ Mindy
SPS fanatic.
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12-05-2011, 02:22 PM
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