general flowering - any tips would be sweeeeet!

Im on my 3rd grow and let me say 3rd times the charm! These babies are doing super well, no yellow on any leaves and the stalks are very fresh green. I was wondering if it is possible for buds to show nutrient burn or over nuted even if the plant is showing absolutely no signs of over-nutrients, i am starting the 4th week of flowering today and am a little dissapointed on bud size. I am feeding them ph'ed water of 6.8 i am in fox farms soil and i am feeding them recommended dosage for my 3 part nute system. I also feed them some calmag, some flouralicious organic enhancer 2--0.8--0.02, moab flower inducer (first 2 weeks of flowering 1--52--32 and some other flower supplement that is 0--30--20, and today i also started a mollases feed of 3 tablespoons per 5 gallons of water. the water ends up about 1600 PPM's and the plants are loving it. What else can i do to make these babies flower bigger? i guess a bigger light would help, ive only got a 400hps. Maybe im just stressin and the nugs will form more in the 5-8 weeks of flowering.

Any help or advice or general knowledge would be much appreciated, thanks in advance!
 
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