Overall the plant looks relatively healthy, you can see some berries growing on the side. However some of the new leaf growth looks pale green/brown. I've kept the EC at 1.2 while trying to maintain the pH between 5.8-6.2. I've tried using both (not at the same time) masterblend (3-part calcium nitrate, magnesium sulfate) and maxigrow/maxibloom. This is in an NFT system. As of September 5th, I switched to RO water as my tap is very hard at ~.76 EC and I suspected that it was throwing off my nutrient balance. EDIT: Humidity is usually around 50-55% and there is a fan blowing on the plants. I've just trimmed some of the older leaves on the bottom to help increase airflow.
Currently the system is at ~.6 EC as I just planted some new bare roots starters in the system yesterday. I expect to bring it back up to 1.2 in a few weeks after they get established.
I've tried searching online for similar pictures/examples but can't find any. That includes using Google lens to try and diagnose the issue.
Any help identifying what I may be doing wrong is greatly appreciated!
by LittleFinger80
4 Comments
Mold, check the humidity, add ventilation
I see you started using RO water, have you started using calmag? Calmag has traces of iron and other micronutrients as well. These are all stripped when u use RO water and needs supplementing to have a healthy plant. The ph could be closer to 6-6.2 to not lock out calcium and manganese. Get your self a ph nutrient uptake chart. I suspect your lacking trace minerals and or are experiencing lockout with trace minerals depletion.
Raise the humidity when you lower the EC.
This is dead roots.