Haven't used the canister. I use simple 2 liter plastic juice containers with slots cut in the bottom with a dremmel wheel and a hose to fit the skimmer air intake hose popped through the cap of the container. Works great for less than a dollar.
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Tom
Current Tank Info: Tank of the Month , November 2011 : 600gal integrated system: 3 display tanks (120 g, 90g, 89g),several frag/grow out tanks, macroalgae refugia, cryptic zones. 40+ fish, seahorses, sps,lps,leathers, zoanthidae and non photosynthetic corals.
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