Critical Kush 5 weeks old problem!!! help!!!

Sup guys i got a Critial Kush in batmix using 2x 250w CFL and another 20w CFL.
She is just finished week 4 of veg and she looking nice and bushy but alot of the leafs started going yellow/brown, any suggestions what it might be and how to treat it guys? i thought it was nutrients burnt ( using Canna Terra Vegga atm) so i flushed it a few days ago but that didnt change anything,
Thanks guys!!!
Here are some pics:

ph issue possibly?

E.

errb said:

ph issue possibly?

E.

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My ph is around 6.4, what would you recommend?

hmm 6.4 is good.. I'm not honestly to sure man, hopefully a more experienced gardener will post up. Sativa420 is a great guy to ask for knowledge.

E.

errb said:

hmm 6.4 is good.. I'm not honestly to sure man, hopefully a more experienced gardener will post up. Sativa420 is a great guy to ask for knowledge.

E.

Click to expand...

thanks bro, i read about it online and people said that it could be cuz the plant wants to go into flower and is getting too much light and the wrong food?

Potassium
a.k.a. potash, this nutrient is key for the usage of carbs/sugars. This is key for sturdy/thick stems, small bushy plants and disease resistance. Its needed for all stages of plant growth, especially bud formation.


Abundance: this is pretty rare to notice, excess potassium usually isnt absorbed by the plants but can mess with levels of magnesium, manganese zinc and iron. This in turn leads to salt damage acid fluctuations and possibly a calcium deficiency


Deficiency: this has yellowing of leaves, from outside in, but with a dark green center vein, and curling of leaf tips, this is mistakenly diagnosed as nitrogen def or iron def a LOT. Stems and branches will be weak, easily broken. the plant may also stretch. *too much sodium (NA) can cause a potassium deficiency.

copy and pasted from the sick plants section.. Looks like it is spot on for what you've got going on.. Hope it helps.