chasv77answered grow question 4 years ago If you are using FFOF, that soil runs hot/rich, if you have not noticed.
I believe and have followed this routine for many grows - - - - - > Do not feed anything for at least 30 days.
If you have a strain that is proven to drink up nutes, then I would start at 50% strength, after the 30 day mark.
For strains sensitive to nutes, I would feed after 6 weeks, at 50%. I feed every third watering(every 10 days or so), due to the residual micro-nutrients, still in the soil.
I have over-fed my plants more than once, with this soil. So be careful, with those liquid nutes.
Good growing.