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#22
05-19-2011, 10:34 PM
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actually the blue line ato (avast marine works makes a similar one) http://www.championlighting.com/prod...cat=388&page=1
is the most reliable unit. Not a single complaint of it malfunctioning online  Might be because its no longer that popular but Avast has re-introduced their own version and no one has complained about theirs. Avast uses a pressure switch that is rated for aero-space use and rated for a million + switches. It is a single point failure device but pluging the unit into a timer or your controller would add a level of safety. Plus you save like $150.tunze units have had some issues with the optical sensor malfunctioning BUT with that said Tunze customer service has fixed everyone's unit that malfunctioned from what i have read. Tunze customer service is hard to beat. 
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