light green, burning, growth stopped

[jahmok]

Hi all
i've a big problem with my plants. I 've 3 strains: chocolope, skunk #1 and biddy's sister.
the three have began to become light green and the veins are dark green since i'm in 12/12( around 2 weeks). Plus the leaves begin dying from the tips to stem of the leaf
they begin flowering... but with this matter they'll die i think
i've no matter of temps, nor humidity.
I'm in soil ( plagron royalty mix) but i correct the pH of my water at 6.5.
I've not put nutes (ata organics) since i repotted them 3 weeks ago.
and my light is a 250 watts hps plantastar at a distance of 10/12"
i suspected a phosphorus deficiency or over watering
but now i don't really know.i let the soil drying to see if this is overwatering... please let me know your opinions
PLEASE HELP ME!!!
i try to put pics in the thread
thanks people

 

[Dr. D]

I take it you havent fed because the royalty mix has nutes in it?
Your best course of action would be to flush with a nute solution with the correct ph, seems like you have lock out to me either that or they need nutes big time. Either way leach em with the required strength solution....Peace

 

[jahmok]

thanks for the reply
yes i 've not fed cause royalty has already nutes in.
what do you call correct pH? am i good with my pH corrected to 6 / 6.5????

 

[Dr. D]

Normally with organics ph adjustment isnt needed.
Id check the run off when you start leaching taking into account what the ph is with your leach solution then adjust accordingly...Peace

 

[jahmok]

thanks Doc
i didn't have time to take care about it..
i try leaching today
i'll tell if it's working
as it happens on several plants i'll try tu flush one just with plain water and the others with a leaching solution with nutes to see what will happen

 

[jahmok]

my run off pH is about 6.5 with my leach solution that is at 7.0
so i don't think it's pH..i think they are underfed but another opinion is welcome
how long does it take to recover from a phosphorus deficiency?

 

[Herborizer]

Underfed or off gassing.

 

[el dub]

Underfed.

lw

 

[jahmok]

thanks guys
it's not off gassing cause i grow in this cab since last year and no problem like that and there are other plants just next to the three sick ones that are healthy

 

[jahmok]

it seems to re-green
thnks people
phosphorus deficiency....i didn't think it could happen in royalty mix...and so quickly
i'll tell you in a week if my flower room get back as healthy as it used to...

 

[lilmiss]

Are there any pests in your garden?? Flyers or tiny crawlies in the top inch or two of your soil? If so, you may have root aphids, which are becoming more and more of a problem (nightmare in my case). I'd first check the root zone for these things, as these "phantom deficiencies" sound spot on for these things. Check for bugs before you try to nute correct or you may end up burning your plants.

 

[jahmok]

by seing the pics and other threads i saw subjects on root aphids but i 've looked at my soil and saw no pests...but my roots weren't as developped as usually (maybe the consequence of the P deficiency...)