One last thing .... I am partial to ViparSpectra - i am running a panel and it IS pulling its weight . I am flowering 2 ICEBOMB ( bomb seeds ) in flower and it is doing very well . So as far as a cheaper led ... It is working . It has a more Bluish / White spectrum compared to Mars ... I used Mars for a couple of years (600/900 model ) UNTIL I " SEEN " the light sort to speak. ViparSpectra is fully capable ( if setup properly - both switches on ) and reflective surfaces ... Heat is nominal ( 75-84° typical for 12/12 run ) My Quantum board ( mars conversion ) runs at a incredible 68° ( 18/6 cycle ). Leaves are either up and pointed to light or horizontal to it ..... Proof is right here ... It will grow good bud for what it is . No complaints.