Leafs towards bottom of plants curled downwards, turning grey in middle, some leafs in middle and bottom falling off,

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Fashoo is there a closet?

here is, but it has the same height as my tent lol!

 

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in coco :
you need to measure PH in and out--- to know the root zone PH.
and measure EC in and out--- to know how much plant is eating, or you have excessive salts .
flush with PHed water when there is salts.
increase feed slightly when the run off is low EC.
never let coco dry.
always water until there is 20% run off.
Always make sure that your meters are calibrated.
use some root beneficial bacteria.

Definitely you have an issue with the root zone, that prevents the plants from taking up nutrients.

stick to the above rules and always watch the new growth.
if you new i advise going with some organic grow in some living soil, it takes care of everything for you.

Hope this helps, good luck.

Thank you! I will keep all this in mind. I have been measuring pH in and PPMs in and out, will try to measure pH out more. I'm going to do the flush tomorrow and feed to 20% runoff with 1/4 strength nutrients + hydroguard, and give them a few days with that feed to see how they do, feeding once per day and increasing frequency whenever I see water start to be consumed quicker as well as nute strength whenever I see PPM/EC too low.

Out of curiosity, since I'v been measuring in PPMs this whole time, whats the EC out range that I should be targeting for weeks 3-5 of flower?

 

[Bsmoke78]

Thank you! I will keep all this in mind. I have been measuring pH in and PPMs in and out, will try to measure pH out more. I'm going to do the flush tomorrow and feed to 20% runoff with 1/4 strength nutrients + hydroguard, and give them a few days with that feed to see how they do, feeding once per day and increasing frequency whenever I see water start to be consumed quicker as well as nute strength whenever I see PPM/EC too low.

Out of curiosity, since I'v been measuring in PPMs this whole time, whats the EC out range that I should be targeting for weeks 3-5 of flower?

1.5

 

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1.5

Thank you!! So current plan for me is
1) Flush coco coir with pH 5.8 H2O until EC/PPM read on runoff is minimal.
2) Feed plants with 1/4 strength base nutes + cal/mag + hydroguard @ pH 5.8 once per day, and monitor outlet runoff for pH and EC.
3) if EC continues to be below 1.5 after several days, gradually increase nutes up to 1/2 strength while monitoring EC of runoff. Hold nutrients once EC is at desired point.
4) If plants H2O intake increases during feeding, as judged by water weight leftover in pot throughout day, increase frequency of feeding to twice per day
5) Hope that this course gets me through flower and helps return plants back to some semblance of health.

Anybody let me know if they see any issues with this plan or any changes, and thanks again to everybody for the help! Barring any further improvements on the recovery plan, I'll respond in a few days with updates on whether this worked or if the plants get hit too hard and its back to the drawing board to improve processes for grow attempt #2

 

[Bsmoke78]

Thank you!! So current plan for me is
1) Flush coco coir with pH 5.8 H2O until EC/PPM read on runoff is minimal.
2) Feed plants with 1/4 strength base nutes + cal/mag + hydroguard @ pH 5.8 once per day, and monitor outlet runoff for pH and EC.
3) if EC continues to be below 1.5 after several days, gradually increase nutes up to 1/2 strength while monitoring EC of runoff. Hold nutrients once EC is at desired point.
4) If plants H2O intake increases during feeding, as judged by water weight leftover in pot throughout day, increase frequency of feeding to twice per day
5) Hope that this course gets me through flower and helps return plants back to some semblance of health.

Anybody let me know if they see any issues with this plan or any changes, and thanks again to everybody for the help! Barring any further improvements on the recovery plan, I'll respond in a few days with updates on whether this worked or if the plants get hit too hard and its back to the drawing board to improve processes for grow attempt #2

Raise your ph to 6

 

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Raise your ph to 6

Will do, I'm also going to re-cal my pH meter today

 

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As an update, still having some stretching (most likely due to lack of light) and still having a little leaf loss at the bottom of the plants, but overall they are very thirsty and drinking 3X a day and their nutes only go up significantly if they don't get fed on time so they seem to be processing both. I'm almost up to half strength and still increasing slowly.