I have started a couple of seedlings in rockwool that have just started to develop their first set of real leaves. At what time should I start using veg nutes and at what strength?
i start using nutes after about three weeks. even then, use like 1/4 strength. i've nute burned my seedlings soooooo many times. be very careful.
i wait till they have their first set of at least 5 bladed fan leaves before i start with nutrients, and i start with 1/4 strength nutes at that then work my way up.
