Hey guys. I got one plant that showing serious sig...

Hey there Chi , you're right to be worried, there's two things happening here : too much N and overwatering causing root problems. You can tell there's a bit too much N from the slow release nutrients because the leafs are "too dark green" and the tips are starting to burn just a touch. Nothing you can do about that though, just gotta trust your plant to power through ! the main vector causing the clawing is the overwatering though : overwatering causes "water mold" that hurts the roots and that's why you're getting the clawing. You can tell there's overwatering from the 'puffy space between the veins" of the leafs (and the clawing). so to fix most of this you need to break down the problem roots with a chelation agent, for example enzyme, amino acids, or humic and fluvic acids. Then you want to follow a strict wet dry cycle. do these two things and the plant will recover surprisingly quickly ! Hope this helps ! 🚀