What kind of deficiency does this look like

[KayH]

Hello I'm trying to figure out what the problem is here it looks like a calcium deficiency. The ph is at 6.2-6.3 however the leaves have dropped dramatically over night.

[bboyfromwayback]

The leaf tips show a slight nute burn. I’ve always grown in soil but just bought a RDWC system to experiment with so I’m going to see what someone with experience says about the leaves drooping.

[Tersky]

easy to get root issues in hydro. You using hydroguard? What nutes? Ph is not horrible but it's about when i start to correct.

[KayH]

I don't have any hydroguard I couldn't tell if the roots are having a problem because they are pure white but just in case I will pick some up.