Need a second opinion with deficiency plz

[Chappa]

Hi all,

This is my first grow for years.

My setup is

1.2x1.2 loft tent for veg with a 600w MH 6" extraction fed into the Flowering Tent for heat during lights off keeps temps at 18-19 degrees

3m x 1.2. loft tent for flowering

Ive got 3 Invisible sun Eclipse 280w each and 1 600w HPS

6" extraction again fed out the chimney

Temps between 18-24 max lights on
Have fan speed an temp control for both tents

I'm Growing in Biobizz Light soil using there nutes as well
Ph is about 6.7
Ppm around 750-850 (Tap water @250)



Veg was about 5 weeks and went really well no problems at all

Until now I'm about 3 week's into flowering, an I believe I'm getting a K deficiency or maybe cal but I can't tell it's been so long since i last grew (about 10 years) I've forgotten everything tbh .

It's only seems to affect the girls under the LEDs or they are showing it first as they do seem a week or so ahead of the HPS end .

I've attached a few photos any input is welcome

 

[bk78]

I see ca and mg deficiency’s

 

[bk78]

Your temps under those LED should be 82-85 imo for proper transpiration and nutrient uptake.

 

[Chappa]

Your temps under those LED should be 82-85 imo for proper transpiration and nutrient uptake.

Thanks for the response.

Ok I'll change the fan controller an set temps a bit hotter.

I've got some calmag on hand.

I've just upped the nutes on the last mix so I'll give them a few days and see if its spreading still I know the damaged leaves won't get better