Beginner takes on 4x Sweet Seeds Speed Auto

This is an autoflower not a fast flower, that is something different. but easy to confuse, Yes they both flower faster then normal standard photoperiods but its not the terminology that has been standardized as of late. Typically speaking, a "Fast Version/Flower" is one of two things. 1) A Photoperiod mixed with an Autoflower to make Fast Version seeds that tend to finish early. 2) A pure Photoperiod with no autoflower mixed in who just so happens to finish ripening up to two weeks earlier/faster then their other photoperiod counterparts. This is what I call Old Fast Flowers vs New Fast Flowers that are mixed with autos. New Fast Flowers also have a chance of just becoming an auto as well. Its in bloom now. Light LST to help air get to the nodes is nice, Anything to heavy and it may go into shock and be a negative overall.

with that EC you are at the limit without CO2 It looks like a K def, but with that EC and PH it could be a little bit of lockout lower de PH to 7ish or 6.5 will be great.