Yeah they're completely clear. It still pumps air though! Wouldn't a split diaphragm not pump anything?
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100 Gallon Reef, 2 x 250 Watt HQI Giesseman 13000K, Reeflo Dart(3600 gph), E.T.S.S Reef Devil Deluxe, Ocean Clear 325 filter, Aqua UV 25 watt, Korallin Calcium Reactor C-1502
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