RW you need to know run-off pH, or ideally in vivo pH ( extract sample from RW w/ syringe). May be well over 7. Ya want 5.5-6
rhizome Reviewed by rhizome on . What can cause this ? Hi, using a dripping system with starters little rockwool cubes and netpots, gh flora series, hps, the roots are not very clean, and the problem is not affecting all the plants at the same level. Can it be beggining of root rot, or larvaes or eggs in the roots, that i found a few ?... Oh yeah, on the most affected plants, growth has stopped and some leaves are completly dry. It seems that the plant is drying... Thanks forward Rating: 5