Leaves burns, please HELP!

[dotnir]

PLEASE HELP!
my plant is 2 weeks into flowering, everything was perfect so far.
I am using a COCO run-to-waste system with 600w HPS.
all equipment is high grade.
PH levels range is a constant 5.8-6.2

using ferts on osmosis water:
Hesi COCO fertilizer, Hesi super-vit, Hesi PowerZyme.
all according to the Hesi grow scheme.

when i transfered her into the flowering chamber i jacked up the EC to 1.5 for a week and then to 1.7-1.8 which is a bit lower than the grow table shows.

i also changes sprinkles type...from a regular ones that sprinkle water on top of the medium to an arrow formation ones which injects the water directly to the medium (verticaly).

symptoms are showing as shown in the pics:
bottom original sun leaves seems to be dry.
mid sun leaves turnd bright green/brown and now have burns.
top leaves are bright green instead of the usual green and start showing somw yellowing.
some of the small leaves on the branches are turning dark green and even seems abit necrotic...

WHAT THE HELL IS GOING ON...?!?!?!?!?
deficiency? toxicity? underwatering?
any thoughts?????
please help

 

[IggyZag]

looks like nute burn, just cut back on them to see how they do..

 

[dotnir]

what about the fact that it has 3 different symptoms in 3 different areas of the plant?

small branch leaves - edges seem rotted dark green / necrotic

top-middle sun leaves - burnd tips and chlorosis (vains still relatively green)

bottom sun leaves - not yellow, but seems completely dried out (could be natural).

cant that be some kind of a dificiency or too little nutes?
Nitro deficiency in the top/middle leaves,
Phosphor deficiency in the branch leaves?

too much, too little, how can i tell?

 

[dotnir]

cant it be under nutes?
cause some leaves seem to have the symptoms of Nitro deficiency
and others seem abit like Phosphor deficiency.

how can i tell if its over or under nutes?

 

[potpimp]

FLUSH!! Get everything balanced and start again. Remove any necrotic parts; you don't need the bottom leaves anyway. I know you said coco but it looks like potting soil with perlite; is that something different?

 

[dotnir]

thanks i will try flushing, but,
should i flush and then start feeding strait away with nutes...
or should i give her some time without nutes to recover?
wouldnt it make things worse if its some kind of deficiency?
and no...nothing different...high grade coco-perlite mix (looks so much like potting soil i thought they gave me the wrong bag at first, but once you take some in your hand, there is no doubt).

 

[gogrow]

thanks i will try flushing, but,
should i flush and then start feeding strait away with nutes...
or should i give her some time without nutes to recover?
wouldnt it make things worse if its some kind of deficiency?
and no...nothing different...high grade coco-perlite mix (looks so much like potting soil i thought they gave me the wrong bag at first, but once you take some in your hand, there is no doubt).

yes it would make it worse if it is some kind of deficiency, but i can almost guarantee that it is toxicity. was dealing with nute burn like this last month, it was so bad that like you said some of the smaller bottom leaves were necrotic, yellowing new growth, extremely dark green leaves with burnt tips. nutrient toxicities can cause lockouts of other nutrients, causing the deficiency symptoms; flush and go from there

 

[mal_crane]

Looks to me like an over-nute experience. Also I noticed your ph seems a little low to me for soil. Too low or high of a ph can also cause nutrient lockout.