White Widow Leaves Curling (PICS)

Can someone help me to why my plants are curling at the top, they are white widow watered every 2 days, 18 inches from HPS 400w light and about 1 1/2 weeks into flowering.
-Thanx

why are you watering it every two days? are you letting the soil get dry before you water her. it could be overwatered. she looks nice btw, im also growin widow.

The soil is dry in between watering, I use one of those meters to ensure the soil has dried out so that the roots can grow.
-Thanx

only other things that come to mind is heat issue .. or ph issue,

I have an oscillating fan on during the 12 hours of lights on with a box fan pulling air up to the attic. Temp: 74-77. Humidity: 37-43% (I'm in Vegas humidity is difficult) Ph: Has never over 7 or under 6.2.
Thanx.

What are you feeding it ?

I feed it Super Bloom 12-55-6

I am interested in the answer also.

are they just curling.. or are they gettin crispy too?

and are you feedin the correct dose?

Overfeeding the plants... thats the problem here..

Clawed leaves happen because of too much nitrogen.

Good luck.

that was my next guess.

I have now moved the lights up to 20" and began flushing the plant with distilled water. I will start feeding the plant with 1/2 the nutrient amount that I previously used, we shall see if this works.
-Thanx

And should I move these plants into 3gallon containers, it appears they may have slowed growth?

ph to low....when leaves go down means PH not correct and must up.
When leaves go up curl thats to many feed.

Why you have a blinking something behind the plant? why you have a WHITE ground collour?
the with is a reflection to the plants and will go down..........

firts flush theme and startover with low food

CLOSETGROWTH said:

Overfeeding the plants... thats the problem here..

Clawed leaves happen because of too much nitrogen.

Good luck.

Click to expand...

clawed leaves to bothom is NOT overfeeding because when they overfeeding they will go up....just like a sigaretpaper.......overfeed will curl up and not down.
greets from HOLLAND

So you recommend a PH greater than 6.7 or so?

no ph 6.1........

If you are in soil you need a pH of 6.5 to 6.8.

6.1 is definitely too low, at that pH you will lock out Magnesium and Calcium.

Here's a chart to help you see what gets locked out when, use the top chart for soil, the bottom for hydro:

View attachment 896526

believe me, do NOT watch a diagram....reed your plants.....take it on 6.1 and see what happens.................. you'll be suprised.......greets again from Holland hehe.........