3x HSO Bubba Kush Autos

Started a grow journal in the appropriate area, but moving to here..

The water chart viewable..

I'll add some actual pics later.. the others are small and pasted i know.. but not much to see except what i a figure are healthy plants..

Day 11. Watered tap @ 6.5. Should I start weak nutrient to them next watering. 3 or 4 days from now?

Day 13.. 3rd set of leaves coming nicely. Would you start weak nutrients next Watering? Should I?

For nutrients im going with