Help with deficiency and extremely slow and small buds

[Slothman]

They're just really really pure. And I've had plants on the past that can take 100perce t without burn

 

[Slothman]

It's only been these 2 plants that have given me trouble

 

[Remystemple]

45-55% RH at 80ºF (27ºC) is the range in flower according to this chart:

Thank you for posting this!