After much reading and searching of forums I think a 600watt hps would be overkill for a grow room that size, so I will go with the 400 watt hps for flowering and the same fan for exhaust (can always run it a bit slower) , the plant is loving the small veg box with two 85watt cfl's and a air purifier, she's really taking off, hope to clone soon, will post some pics.
lodas Reviewed by lodas on . Heating and light queries 600/400hps/MH ,optimal exhaust fan? Hi all I'm looking for some advice from experienced growers with regards to the size of light, heat generated and the right exhaust fan to deal with that heat in a closet grow. Ok let me give you the grow breakdown and info first. Clost floor square feet equals 4.59 square feet or 1.39 square meters. Height is 198cm or 6.49 feet - plants will hit the light anything above 178cm I'm vegging in a box i built with 9000 lumens cfl, going well, so the closet area is going to be used Rating: 5