Sorry to come on your post asking for help but im a newbie between a rock and a hard place . Im about 4 weeks from seed, im growing in ffof with 25% added perlite im watering with 6.5 ph tap water and my runoff is coming out at 5.0. The only reason I complaining is because I have some type of deficiency or slight nute burn do to me adding a half of tsp of the General Hydroponics Flora Nova Grow nutes (7-4-10). Im growing in a 3x3 tent with a 400w mh reflector hood my temps stay between 72-75 degrees and humidity between 45%-65%. I don't know what the issue is so any help would be appreciated. By the way the strain is white widow/big bud from attitude. Pic are below.