I'm no plant doctor! Yellowing leaves

[StandingInQz]

Hello forum. Hope you guys can help me.


this is a fastbuds GSC.

Day 32 above the ground

Yellowing started on lowest set of fans.

Feeding currently 2ml fish mix
1ml bloom
2ml algamic
2ml root juice
1tsp Epsom salts. All per L.

I do not foliar feed. Light is mars p96.
Temps 25-30
Humidity 35-40
Deficiency was noticed yesterday, I looked at the charts but I can't tell really. Thanks guys.

Pictures are 2 different fans. Bottom set

 

[Heavily Medicated]

I would say Mg def just starting up. You are just kicking into preflower and Ca, Mg, and P demand goes up from here.

 

[namvet25]

It is not uncommon for lower fan leaves to loose color due to lack of light.At day 30 you should still be feeding nitrogen veg nutes and when they start full flower mode you can start giving flower nutes and cut back on veg nutes.I don't no your nutes npk value to recommend dosages.You should also start using cal/mag to ward off any issues down the road.

 

[Waira]

... -- you're using Biobizz, right? Very mild stuff, I often see mild deficiencies on plants using these nutes,... looks like early N defc., maybe Mg,... get us a whole plant pic too please, it'll help with evaluations,...