im having the same prob cant figure it out.

my last run had pluahberry-void- vortex. i poped the beans in solo cups everything was fine but my plants were stunted and they had dead foliar comin from the bottom up. i bad about 7 nodes skinny weak plant but the plants were all dying frkm tge bottom up and fast. so i chucked em and got better coco and sum perlite.
so i started a new batch of bubba-agent orange-qush

but im having the same prob. plants getting ate up from the ground up. my ph is good. i started em at 250 ppms and just did the last feeding last night at about 500 ppms.

the pots are dry when i water em. i figured over waterig but with the new coco and perlite i thought it would dry out quick.
any ideas?
no pics til tomorro.

"ate up" means nothing.
We're still waiting for pics.
When you say Ph is good, are you using soil or hydro range for your "ok" range?

my stoner senses are telling me overwatering

my first guess was overwaterig as the coco i used for my first rum had no perlite.

so when i scratched that grow i bought roots organic with a extra bag of perlite.
but its the same. bottoms of plants are dryed up and crispy. tops of em look heatly.
could it be cause my humidy is jumpin up from 16 to 55 almost everyday?

RH of 16%? pretty dry, my man. but, we need pics, and dirty details.

this was takin about 2 weekes ago.. u can see the bottoms of the planta are all dead. but thats how it starts on all of em and it just gets worse. i was using floro to veg (moved em up for the pic) and recently moved em all to flower tent to sex em. so far 8 femals 3 undecided.
i moved em all to fllower tent cause i thoght that the floro werent strong enough for all of em.