Various problems on coco (prof advise needed)

eekje

Well-Known Member
Hello everybody,

I am at the end of week 4 flowering (12/12 lights) and the botton/middle of my plants are getting yellow to white-ish color and they simply drop off.

Here are stats and pics(see attachments):

Plants: OG Kush (clones), vegged for 10 days in a super-propagator
Medium: Coco Slabs, 5 plants per slab

Lights: 3x 600w HPS with adjust-a-wings hanging on 60 cm (24" inch)
Temps: LAMPS ON: 29 degrees celsius (84 fahrenheit) / LAMPS OFF: 22 degrees celcius (71 fahrenheit)
Humidity: daytime 40%, nighttime 60% +-

Nutes: GHE Flores 3-Part .. following chart with 2x FloraKleen flushes until now.
PH: 6.0 always


The problem(s):
Before the second time i had to use FloraKleen (after 2nd week flowering) i decided to measure my drain.
I watered them until i had 15-20% drain, i filtered the drain through a coffeefilter and got some shocking salt-build-up results. The PH was good, 6.0 to 6.1. But the EC was about 2.2 (1400ppm) while i was watering them with 1.3 (830 ppm) the whole time. So i decided to flush them excessively with FloraKleen. I flushed them and let them dry out for 3 days.
After that i resumed the original GHE chart.. however the problems only seem to be getting worse as you can see on the pictures. Lower and Middle fanleaves are yellowing to the point they simply fall off. The top of the plants are looking very light green aswell.


What i've done so far:
I have tried treating them with extra N (nitrogen) and M (magnesium) by mixing the advised dosage of those solo-elements + the 3th GHE compound (the pink bottle). However i dont seem to see any improvement.


Looking for some pro help bros.. plz :)
 

Attachments

past times

Well-Known Member
I know you said you have tried more N, but That looks like Nitrogen deficiency too me. I would add a little extra veg nutes for a few waters and see if that helps
 
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