Thanks again for all the discussion and help provided on this forum. Found the operations manual for the GAST pump http://www.gastmfg.com/pdf/70-205G335PL.pdf on one of the other threads. Noticed that it recommends an operational environment not to exceed 104, but no mention of a cooling fan. Anyway, figure I will not run it during sunny, hot days.....but will keep it going at night and during cloudy, cool days. As I understand it, those are the times that oxygen is needed most anyway.
