My plants are 6" tall,i been vegging for a month1/2,i'm growing in ebb & flood,i have a 600w air cooled mh that is 24" from plants tops,i'm using botanicare pbpg & cal-mag plus,my room temps or 70-80f..rh 48-55%..res temps 65-70f..ph 55-58,i have 2 fan blowing for circluation,when lights are...