No idea of issue

[Dobbie Dude]

Not to sure whats going on with 3 autos , only had 1 feed of Canna A+B 3 mls per 1 gallon, 3 mls Rhiza, 6 mls Cal Max, 100 % Canna Coco Coir- PH 5.8 in 6.4 out, Rain water started at 5 EC, RH 62-72 % - steady 25 degrees , TB Naturals CO 2 , any ideas guys , your thoughts would be appreciated

 

[Papasmurf99]

Maybe ease up on the nutes until its bigger

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[MickJ]

Not to sure whats going on with 3 autos , only had 1 feed of Canna A+B 3 mls per 1 gallon, 3 mls Rhiza, 6 mls Cal Max, 100 % Canna Coco Coir- PH 5.8 in 6.4 out, Rain water started at 5 EC, RH 62-72 % - steady 25 degrees , TB Naturals CO 2 , any ideas guys , your thoughts would be appreciated
View attachment 938268

I think it's magnesium deficiency but @Waira is the guru if around.

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[Waira]

hmmmm, need to verify a few things: brand of coco, and did you rinse/CEC buffer it and are you sure your pH meter is calibrated,..and any EC/TDS reading on run-off? I find it weird as hell that the fed went in at 5.8 and r-o was 6.4! Oh, the rainwater, can't be EC 5- ... did you mean 0.5? Even that is pretty ion loaded for such type water,....could have collected stuff while draining.... Do you do 15-20% run-off each time? Did this happen after the feeding? ... something is wack here, you have only fed once in this coco, how old is the plant? Coco is barren stuff, just some native K and Ca/Mg from CEC buffering by the maker,....
Actually, please go to the colored section above this one and find that patient form; copy/paste into here and fill in details for proper diagnostics

 

[Dobbie Dude]

hmmmm, need to verify a few things: brand of coco, and did you rinse/CEC buffer it and are you sure your pH meter is calibrated,..and any EC/TDS reading on run-off? I find it weird as hell that the fed went in at 5.8 and r-o was 6.4! Oh, the rainwater, can't be EC 5- ... did you mean 0.5? Even that is pretty ion loaded for such type water,....could have collected stuff while draining.... Do you do 15-20% run-off each time? Did this happen after the feeding? ... something is wack here, you have only fed once in this coco, how old is the plant? Coco is barren stuff, just some native K and Ca/Mg from CEC buffering by the maker,....
Actually, please go to the colored section above this one and find that patient form; copy/paste into here and fill in details for proper diagnostics

Shall do, will wait until I water/feed on Wednesday - will take pics/video - but yes your correct the e.c is -.005 rain water.....it is a run to waste system.....