Check the part on flushing your Balls.... Might be in need of an enzyme...
https://www.alchimiaweb.com/blogen/grow-cannabis-plants-clay-pebbles/
Great article thanks Gypsy Dog.
I do have some cannazyme lying around so I can add that to the flush next time.
The test plant has responded ok to the flushing, I am keen to flush the rest of my plants but will leave everything alone for a few days after last nights water change..
I am tracking my tank numbers like you said, ec has stayed the same and the ph has slowly increase.
Here are the plants an hour after lights on looking not perfect.. but quite happy.. At this point they always look like they are on the mend but disappoint me when I come to check on them in the morning. I have to figure this out it’s killing me. !!
The first picture is the test plant that was flushed twice.. I am going to try feeding her on a low ppm nutrient solution.
Most of the plants have a light green colour more prevalent at the bottom leaves.. I add cal/mag until I get at least 200ppm and the ph is good as I have said. Is this down to my low amount of nutrients in solution?