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![]() Aren't they like the things you put on the tap to start a siphon? How do you use them in a reef tank?
Aquatic-eco system has these for mixing but I'm not sure if it's what your looking for.http://aquaticeco.resultspage.com/se...21&Image3.y=13
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Brian ____________________________________________ 220g inwall 48"x36"x30" 110g mangrove refug/sump Poison Dart Frog Vivarium |