I have a little DWC Box with lemon-basil and oregano. Its only a test grow before i do weed in it.
I have a huge problem with the ph-value... here are some measurements:
11.09.12, 16:30 : ph 8,5 - before nutrients
11.09.12, 17:00 : ph 5,3 - nutrients + ph-down
11.09.12, 20:00 : ph 7,4...