lookin good. imo one of the most important gadgets to invest in is a Hanna EC/PH/Temp hand meter (Hanna Combo pH/EC/TDS/Temperature Meters - Meters & Data Acquisition - Earth & Environmental - Carolina Biological Supply Company)

these sweet little things save you a ton of probs down the road if used correctly(lockup, local water PH swings, nute burns). The other benefit is that you can scientifically fine tune your approach in a lot of different ways when you want to tinker. For example I experimented with dropping the PH of my rockwool to 6.0 before taking clones and transplanting and got the timing demarcated to a t.

Costs a bit, but the problems that it has the tech to diagnose and repair make it an invaluable tool.