Ok, so these plants are growing in store bought soil with added perlite. the lights are a cfl "lotus" 525W and the air is clean. as for PH, I live in lebanon and those are hard to come by and are expensive as hell- so i cant say. i water once a week and fertilize every other. There are brown spots showing up on the edges of leaves and the plant looks dull. See pics and please let me know what you guys think.