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BillMonroe started grow question 4 years ago
* Spots (pic 4), on only 3 leaves of the plant at the top.
Last week, before lights out, I misted. By lights-on time, some parts of the plant were still wet. Is this some water burn?
Tap water is PHd and ~215 ppm (plenty ca/mg)

* Any insight on those yellow tips is welcome! :)
White Widow Auto
15 weeks
White Widow Auto BillMonroe
White Widow Autoflowering
14 comments · 4 years ago
Week 6
Leaves. Edges burnt
B4RNS answered grow question 4 years ago
Nootz burn, definitely, looking your growth since beginning you shouldn’t have nuke them with nootz in week 4 when the soil was brand new. Here’s a tip , in soil everything happens 3 weeks after approximately. No need to use Ca, there’s plenty enough in your soil + your tap water , those brown spots are Cal excess and the tips burns is because the EC in the media is/or/has been to high.
Removed answered grow question 4 years ago
It is a slight nutrient burn.
When you say that you are feeding 0.6EC (PPM 300) that's total strength of the solution? Or plus water?
Second, feeding frequency. Even if you are feeding low strength, if you feed too often, that also can lead to nute burn. Feed only once every 7 to 10 days, no more in soil.
Third, sometimes plants react badly to foliar feedings, so don't do it.
Hope that helps.
Experimentgreen answered grow question 4 years ago
Hey there so over all your plant looks very nice and bushy. I do see the burnt tips and spots, I think most would attribute to a nute burn, or occasionally if a light gets to close it can burn some tips. Be careful of leaves that rest on each other as they'll hold that water there that you're misting, and a variety of things can happen like mold spotting etc.
Also you may be ready to be transitioning to the blooming nutes,if you haven't already. And sometimes those burnt tips won't go away but if they stay the same and don't increase I wouldn't worry too much.
Happy growing and love the plant. :)
BigDaddyK answered grow question 4 years ago
Could be a watering issue , test the runoff ph and EC , if it’s more than 2 it’s too strong and if the ph is below 6 or above 6.8 it will need sorting :+1:
Lou_Grows answered grow question 4 years ago
That is nute burn! I would feed her plain water until the problem is fixed.
FlavoursUk answered grow question 4 years ago
You have slight nutrient burn thats why your tips appear burned. Also if you're spraying and lights come on.. This could be the residue drying from that. But the brown spots look like calcium deficiency. Hope this helps