How To Use Progressive Web App aka PWA On 420 Magazine Forum
Note: This feature may not be available in some browsers.
It looks like lock out. I which case, you will need a pH meter, drops, or litmus paper to do anything about it. Once you get a ph meter, water it with water that is pH6-6.2 until the pH of the water coming out the bottom is around the same as the water going in the top (might take 15l or more with your size pot)
EDIT: Whoops, for some reson I thought you wrote that they were in 5L pots. In 31L pots. It might take 30-90L of water. Since you only started giving them nutrients recently, you'll probably need close to 30L
I would try and find RO water and give it that until you can check the pH. Maybe spray some light nutrients on the leaves with a hand sprayer once or twice until then as well.
If you already flushed them until the water that ran out was a pH of 6, then you don't need to flush again. Waiting a day or two to feed them again is probably a good idea. Then start running the canna like the directions say. I wish I could run bio canna again, that stuff was great. They don't sell it where I live.
no idea off the ph when i flush before , i got my ph meter just now
Hmm. Is it organic canna that you're running? or the hydro line?
i'm not positive - someone please correct me if i'm wrong- but, i think you'll be wanting to run with the hydroponic range with the canna terra (closer to 5.8)