Was just wonderin how long after sprouting should i wait before adding nutes to their water? and what concentration should i use (BioBizz veg an flowering nutes)?
Ok, wait until your seedlings are well-rooted at least. This should take 2-3 weeks. When you introduce nutes, start at 25% strength and slowly work your way up each week. This is especially true if your nutes are not organic. Organic ferts will do less damage if you overfeed.