Thanks for that I'll bring them back inside. I was just searching to see what the purple stems were about
get some cal/mag, add it to your r/o then adjust ph. because your soil is over watered already, it may take a few days for it to bounce back, But water it till you have a little run off, get a fan on her and leave it till the soil is ALMOST dry. then water again with same thing. When you pick up your pot, it should feel light, then it is time to water, if it feels like it has any weight from moisture, don't water it.
and some silica is always a good additive.