Northern Lights in AutoPots

For some reason I can't select GH nutes on this site anymore. It was a pain anyway. I'm sticking with feed week 4 using the weekly GH feed schedule. I'm using flora micro, gro, bloom, calimagic, and floralicious plus. I follow it to the letter except I feed 5ml/gal calimagic the whole grow. I mix 4 gallons of nutes in 2 gallons of RO water, then add additional water until I get to the PPM range I want. I'm running this grow on the low-end of the range to see what happens. I'm on feed week 4 and will stay there for the rest of veg. The chart says 850-1050, so I'm aiming for 850 TDS in the res. The growth is great so far. One plant is a bit smaller than the other 3 and the canopy is really starting to fill out. No deficiencies or problems spotted so far. I'll likely veg for another week or two - I want to fill out the net first.