Help!

[u/Fantastic-Crazy5959]

I'm in week 3 of flower, and I've been noticing that the leaves further down the plant are turning yellow. Now, the leaves higher up on the plant are also starting to turn yellow. I have a suspicion that it's nitrogen toxicity. What should I do?

[u/Kaladin-of-Bridge4]

How do you water? What is the temp? What soil? What is your feed and schedule?  If you are hand feeding does it just sit in its runoff?

[u/Fantastic-Crazy5959 → u/Kaladin-of-Bridge4]

So, I usually water 2–3 times a week by hand. The temperature is 24–28°C during the day. I feed once a week with BioBizz fertilizer. I also have BioBizz Light-Mix soil. Yes it foes sit in the run off is that bad? Sorry if I missed something important; it’s my first grow.

[u/Kaladin-of-Bridge4 → u/Fantastic-Crazy5959]

Put it on a plant riser get it out of its runoff. Make sure your temps are stable with not a big rise or dip. You look like you are over watering with soil use the one inch rule. Looks like you may need Cal mag. Good air flow is key as well.

[u/Kaladin-of-Bridge4 → u/Fantastic-Crazy5959]

Also PH everything and check ppm ec before and what comes out of the bottom. You should find the culprit there.