In veg you are going for about 2000-3--- lumen per square foot. For flower about 10,000 lumen per square foot. I'm not sure of your lumen output per bulb but it's generaly on the packaging or available on-line. For all you PAR afficionados out there, it's just usualy not on the packaging so... Your fan should be moving about the same cfm (cubic feet per minute) as 1/5 your grow area. In other words your fan should move enough air to replace the air in your grow area every 5 minutes. Second grow you know about odor control or if you don't need it. PH up/down, you must be doing hydro so you just left my area.