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#1
04-23-2015, 05:23 PM
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Is there not some filling and purging of a chamber for air or CO2, and pumps on timers and stuff?
Japarto swears by them and seems to think they're simple, but I'll stick the basic down flow PM design I have 
__________________
Brad 
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#2
04-23-2015, 05:35 PM
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I think AquaCare has designed a CO2 regulator for it as well. In a complete setup; I think it counts the bubbles as well. I have no idea what I'm talking about.
https://www.youtube.com/watch?v=am8mbOeKBzE
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Hybrid Mode
