I have a kessil h350 on a 2x2 area with 4 seedlings. The light is bright; you cant look at it directly. Hopefully Ill have a harvest update in a few months. Ill be doing a scrog with little veg.
Yes. Just make sure that the total amps (of the fans) equal or are less then the ac/dc converter can handle. Typically you can run a bunch off of one converter.