Nutrients??

pp, thanks for the help bro, and everyone else, i realld do appreciate any help. I think i will do the water fert water fert and see how that works

I'm familiar with the Sensi 2-part nutes if you have questions about it I can try to answer them and if I can't I know who can.

As far as when to start feeding them - if the leaves get pale and turn yellow you waited too long. If the tips burn you started too soon/heavy. It varies from strain to strain how quickly they need nutes and how much you can give them to start.

I always start off super light, like less than quarter strength and build up slowly from there. Obviously you don't want to try to do it wrong, but just remember every mistake teaches you more about where the limits are.

A lot depends on the nutrients in the potting mix, and the additives the gardener uses.

I was using an organic brand by Dr. Q called Filthy Rich potting soil. It was a blend of peat, forest humus, worm castings and perlite, and I'd only have to give half-doses of nutrients during the growth stage. (at least for sativa dominates...indica's got a normal dose)
Was beginning to think my seeds had spoiled or that my water was toxic. Then I re-read the ingredients list on the bag. Dr. Q changed the mix, and have excluded the forest humus and worm castings. Wish they would have pointed-out this different formula, but I finally figured-out what was causing my yellowing and stunting problem(s).

The point is...FFOF is a moderately "hot" blend that provides most of what a plant needs for the early developmental stages. Not nearly as aggressive or long-lasting as Miracle Grow soils, but it can sustain growth for a while. Transplanting provides the 'bump' of nutrients necessary for the rest of the growth phase.

Usually growers wait till the 4th or 5th set of true leaves to start giving half-doses. Check online for their weekly feeding schedule. (on the company website)
Don't overwater. It causes yellowing, stunting and brown spots.