Everything looks pretty fine to me. I added some Bud Candy and Some Cal-Mag and increased the strengh of the nutes. Giving PH'd water between every feed. Right now 500ml every 2 days.
PH Tap Water: 8.4 (PH'd to 7.4 before adding nutes)
EC Tap Water: 0.45
BK#2 branches out very well!
I am using 2 Mars Refelctor 48 (2x100Watts draw) at the moment.