Looks like it got over watered.
kcoc,
In your second picture, it looks like you have nute burn on your leaf tips. How much blood meal did you put in there?
hmmm, nute lock.
ramhorning caused by lockout,
what nutes you using?
whats the ph going in, whats the ph of runoff?
heat,water,PH These are the things you need to check into.
Whats getting locked out? How do I got about fixing?
Whats getting locked out? How do I got about fixing?
In most cases that doesn't matter, trying to identify whats going missing is the stupid way of doing things unless you create your own nutrients.
Posting the PH of your runoff as well as what you PH your feedings and waterings to will let us know if your soil PH is out of range.
Runoff will tell us a lot.
also if your room is getting as hot as 84 degrees without CO2 you may be stressing the plants, it would be a good idea to pull back to the mid 70s or start using CO2
Roots aren't liking something. Pop the pots and replace old with fresh soil, water lightly and wait 3 days then give a full watering/feeding.
Move the plant to another location in the room, the light and air circulation change may help, and help identify the issue.
Give em a dose of Lilly Miller brand Plant starter w/ Vitamin B1... It'll clean any dead shit from the roots and encourage em to grow more.
I think a cup of bloodmeal per cubic foot can be too much, especially if there's not enough dolomite or oyster shells or something to buffer against low ph from ammonia in the soil. Also contributing factors can be too little air circulation, either from too much (frequent) water or too little drainage material like sand and perlite. It does look like overfert, though I associate the clawing with too much P, was there a lot of bone meal too? There is no magic amount of fertilizer to use. It depends on many other things in the soilmix and general environment, as well as with the size, age and health of the plant that goes into it.
What a load of bullshit.
In "most cases" it DOES matter...
Identifying the exact deficiency and cause of lockout are imperative to resolving the issue. To say that it's a stupid way of doing it may provoke some colorful replies.
In fact Runoff, or RO Ph will tell nothing about a plant that is locked out or having uptake issues as the soil is out of balance and nutrients aren't being used properly.
Overall temperature is somewhat relevant since the issue is localized on one plant. Which indicates room location, lighting, spot temperature, or poor ventilation/circulation in spots.
It doesn't really matter, if you're using proper nutes then trying to isolate what is getting locked out doesn't fucking matter at all.
Busting out some leaf chart and trying to pick out which one yours looks like is the most counter productive thing you can do. Look at how many growers try to fix "deficiencies" by adding more of what is getting locked out. When they should have been fixing some other issue that was causing it. It causes more harm than good straight up....