new growth tips yellowing - 11 days since flip 12/12

hi guys im a little concerned about the yellowing tips from new growth im in 11 days flowering since 12/12

i use gh 3 part in soiless sunshine mix 4, in 5 gallon plastic soft pots.

also use

calimagic
liquid gold
bud candy

for now.

for bloom booster im using moab. but havent putbany in yet since the yellowing of tips

im under 1000w super hps. round hood, bulb hung vertically. about 14" from top of canopy to bottom of bulb.

lights off temperature - (18c)
lights on temp - (28 - 30c)

humidity around 50%

use tap water with ph when needed around 6 to 6.4. runoff last checked couplendays ago was 6.0

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Sent from my iPhone using Grasscity Forum