The plants are growing in a DWC hydroponic setup, and are almost 2 months old. I've been using the master bled nutrient mix, with adequate proportions of Calcium Nitrate, Epsom salt and NPK(19:19:19). Recently I used pH done to reduce a high pH reading of 9.3 and managed to get it down to 7.5 in my 2nd flush of fresh solution.
After this, a few days later today, the pH of the solution has suddenly started to drop rapidly, while the TDS has started to increase. Please help me rectify this conundrum.
Also, the leave have started to droop and some of them have developed these dry spots in the midrib. I would like to know if this is some kind of deficiency or a rooth rot issues and what can be done to reverse this issue?
by Soggy_Nebula8103
4 Comments
Leaf miners?
It looks like edema to me- the little raised bumps. Do you have a fan going to circulate air?
I had a similar issue when growing indoors and asked my ag extension and that was their guess. It resolved when I brought them outdoors. But the circulation of air in subsequent grows helped a lot.
Edema. Has happened to me when growing indoors in a tent during cold weather and not enough airflow.
Aphids