Sudden Change Day 42

[Imagine]

Problem: Very minor deficiencies till today. Yellow hammered veins with crispy ends mainly large fan leaves in 24 hours.

Medium/grow method: HF with NLS mixed 1 lb per 5 gal. Soil ph 6.5 by slurry test.

Feed: and supplements used: 1/4 tsp recharge and 1/2 tsp calmag per gal spring water every watering and build a flower top dressing used at day 24 and 40.

water source:spring water 75 ppm & 7.1 ph

Strain/age: DP night queen 42 days

light used: Mars hydro sp 3000 100% @ 20" above canopy

Climate: 77d at 55% rh lights on, 74 & 50 lights off. 20/4 cycle

Additional info: May have added too much top dressing this last time around...

Plant#1


Plant#2

 

[Imagine]

Also, just happened to notice the leaf in the second pic had been green till this morning and the tips were crispy this afternoon but three of the leaf fingers that had been shaded are still green.

Could something in the top dressing be making it photoreactive?

 

[Iriee Vibez]

It looks like too much calcium. I would quit the CalMag altogether, and just feed water with recharge. I haven’t had to use it once, and I used a similar mix as you did, only with BAS instead of NLS and HF.