RDWC - Blackjack - Can you tell me what this problem may be?

cadence

Active Member
Ok.. quick run down,
RDWC Licensed Medical Blackjack grow.
vegging at about 1170 ppm which includes starting with dechlorinated tap water at 65 ppm. No cal mag used. about 5.8 PH
Running GH at 1:1:1 ratio. 8ml per gallon of each.. using Latewoods modified Lucas formula.
3.5 gallon buckets for vegging 600Mh conversion bulb. About 72 degrees room temp. 69 water temp. Oscillating fan.40-45% humidity.

Its growing like gangbusters.. crazy big leaves and such.
I am getting what looks likes like very slight nute burn (I think). And tips that curl under. Super fat leaves almost like the plant has Gigantizm!

Here are some pics.. looking for a little direction. What you see is not on all the leaves.. really just a few.. so I'm not freaking out, I just want to stop it in it tracks... I just topped up with ph'ed water brought it to about 900ppm measured using my pen..

Let me know what you think!

Think I need calmag? or is this just an over nute situation? or both?
 

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