Aug 14,
I did not water the plants this week. The large rock wool blocks are still very damp. The plants look very healthy. The new plant growth is coming in a bit bright green and turning darker as the plant grows. I will be increasing the nutrient solution for the next feeding.
Some powdery mildew was starting to grow on top the Rockwool blocks. I simply took a paper towel and brushed the mold off the blocks. By letting the blocks dry out more the mildew has not come back.
I have been following the recommended VPD chart and the growth from just one week is incredible.