plants wilting during budding

[birdboy]

my plants have gone through hell and back .I am finally in budding stage 3 weeks in and am noticing their wilting on the bottom of the plants working their way up the plants .first it was just one plant now im am noticing its going on to other plants
please look at pics and tell me your thoughts
fyi
hydro system for vege and then went to drip system for bloom using botanicare bloom . plants drinking up to 2 galloons daily

E-indoor
E- hydroponic
E-specific medium
CSL-botanicare
HCL-Hydro/drip system

SCLR-Soil or slab runoff pH
E-distilled water
E-Source water pH
HRT-Source water EC (if hydro)
E-3 months 3 week in bloom
E-1000ppm
E-1000wt 1-2 feet from plants
E- 75degree off 75 degrees on
HD-?
E-45% humidiy
E-12/12
E-lots of vetaltion
TR-yes