Yellow on the edge of a few sugar leaves

Day 46 of flower,I noticed a couple yellow spots along the sides of a few sugar leaves on the top half of a few buds and the rest are deep green.Been using only Veg+Bloom at 1.5 EC for probably 3 weeks and the only change was I applied some BMO super plant tonic in the last week.I've got 4 plants in a 2' x 4' scrog under 432 watt's of T5 HO using 5 gal air pots with fox farm soil mix and noticed a growth spurt in the last week and I did a small flush a week ago and I give them molasses once a week.It's only noticeable on 6 or 8 flowers,any thoughts on this?
Fan leaves show spider mite damage,I have predators working on that.

Are they getting light burn? Just a thought..

Edit: Is the leaf in the top right covered in little yellow spots? Hard to tell clearly from the pic..

MajorCoco said:

Are they getting light burn? Just a thought..

Edit: Is the leaf in the top right covered in little yellow spots? Hard to tell clearly from the pic..

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Sorry should of listed the lighting,added it to OP. I'm under T5 HO, so no light burn.
Fan leaves show mite damage.

I have never grew hydro or know much about it but, 1.5 EC seems a little high doesn't it? I'm hoping someone can help you out man they look like some killer.

keep it real. said:

I have never grew hydro or know much about it but, 1.5 EC seems a little high doesn't it? I'm hoping someone can help you out man they look like some killer.

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Some of the guys over in the Veg+Bloom thread run up to 1.8 EC in heavy flower.I'm going to give them straight water then back down to 1.3 and see if it does anything.

If it's only showing on new leaves then it's usually micronutes def rather than NPK. Could be lockout or over fert, since your plants look very green otherwise. Seems early to tell though, and it could also be related to the mite damage?

i would say its natural. It is maturing and leaves do tend me be neglected later into flower for further bud production. fan leaves do not provide bud sooooo it shouldnt really matter.

enjoy those Crystaly nuggggs

BquamB said:

i would say its natural. It is maturing and leaves do tend me be neglected later into flower for further bud production. fan leaves do not provide bud sooooo it shouldnt really matter.

enjoy those Crystaly nuggggs

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You may be right,this is my first grow.Today was day 49 @ 12/12 and I noticed amber trics with out even using my scope on some of the sugar leaves,none on the buds yet.It's Wappa and it's suppose to finish in 55 to 60 days.Have a guess on how much longer?