Most people are not aware that HPA does not cost that much more, but pays HUGE dividends. I use a Aquatec 8800 high pressure pump (~$90) and Reptile Basics mist heads ~ $8, but you don't need many . You do need a deep cycle timer, minimum of 5 second on time (DNe ~ $70) , but better is a Sentinel DRT/MDT-1 which is accurate to < 2 seconds