Im new to this forum and this is my first post, so thanks in advance for any help. Ive recently invested in a 4x4x6'4 grow tent, a 1000w dimmable lumatek ballast, a 600w ushio hps bulb and a 240 cfm exhaust. Ill be using a soil medium, comprised of FFOF, perlite, vermiculite, and Happy Frog...