It's not really a straight line percentage. For sprouting seedlings its about 1/8, week 1 25%, week 2 50%, week 3 75%, and finally full strength in week 4 of veg. Then they (Dyna-Gro) have you upping the strength significantly in week 1 of bloom and I only feed about 60% of what they say. Their schedule tapers off after that and mine remains constant. In short, its something I've put together through trial and error that works for me.
It never really says in their chart if its once a week or every water, but I couldn't imagine throwing that much feed at them every water since I use quite a bit less than "reccomended" doses and don't have deficiencies.
