5 week 35 day old White widow autoflower very yellow leaves

[kiwikush]

Hello folks, my 3 white widow plants are starting to develop very yellow leaves, mainly the large bottom fan leaves. They have only had a couple of very light feeds with nutes, biocanna vega, boost, Rhizotonic and a half dose of cal mag. The rest has just been water. Soil is canna terra.

I automatically just assume it's a Nitrogen issue but keen to hear what others think? They are growing in a scrog under 250w hps on a 20/4 schedule.

Any help much appreciated

 

[DABaracuss]

sounds like you got it all in there lol Sometime the big fans come off self prune type. But depending on what stage it is in and the strain if you loosing more fans she wants FooD lol

 

[Waira]

ayuh! Straight up N defc. mate,..up that feed! And just to be sure, get us a normal light pic too, HPS is lousy for color rendering,...

 

[kiwikush]

Thanks for the replies, they are looking a little light green under normal lights.

Gave them a good feed of Biocanna Flores and Boost and they look happy as!