weeeed

just bought my b/w polly film and and 400 watt light...(mh)about 5/5 tall..2 ft deep and about 3 ft wide...going be growing about 8-10 plants..is this space to small and if so and many can i fit,,,,,,going to be buyin a 200 cfm inline fan...usein promix,it is tru i dont need to ph anything usin promix?,,,and im going to be using Flora Nova....when do i start to add the Flora Nova and how much do i add...how much ML pur L do i add...and how often do i water with the Flora Nova everyttime????