Red...

So much of when to fert depends on your grow medium.

I do kinow that with good medium, PRO MIX, I only gave them a teaspoon of 11-4-1 Bat Guano maybe for the first 30 days of veg.

Anytime after that when I nuted, the plant rejected it...I did manage to get some cactus ferts to stay down with a 1/5 dosage a couple of times.

This is not hydro...so there is no SET plan...so much depends on her medium and whats in it.

Just start super light once a week say on 4th week and watch her about 2 days later. Study the new growth.

I always said this is more art than science.....sometimes....