The sea hare was extremely efficient for me - gone in 2 weeks and so far VERY little has come back. (My Phosphates tested 0 and I use tap water.)
As with my nano, once the initial HA cycle finished, that was it - never saw it again. (Hoping for the same!)
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Red Coral Online Store 
www.redcoralaquarium.net
45 Gallon Cube with 10 Gallon Sump, Lighting 8 bulb T5, Vertex IN 80 Skimmer
-2 Occelaris Clowns, Engineer Goby, RBTA, Peppermint Shrimp
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