Deficiency/excess or ph/ppms?

[GrilledCheese]

Hello everyone,
I'm new here and was wondering if I could get some advice!

I'm growing 4 plants, 2 in Coco and 2 in soil. 4 different strains. 3 are looking questionable in different ways.

This one is looking very light in color. I flushed it with 5.7ph water but the runoff was 7.8ph and ppms were over 1,000. Should I let her dry out for a bit or do another flush right away? She is soaked right now. Kinda think she needs a dose of nitrogen but I need to make sure her ph is on point and I don't give her root rot.

This is another one in coco and the leaves are turning yellow at the tips and sides. I flushed her with 5.8ph water. Runoff was at 7.8ph with 650ppms.

This gal is in soil (foxfarm ocean forest). She seems to be cupping a little bit and looks like it's beginning to react to something. Possibly ph or ppms. I just fed her with 6.1ph at 950 ppms. So maybe I need to flush her too.

Her fan leaves look off. Cal mag needed? Or burn?

Any and all help is appreciated!!

 

[Grownsince95]

They all look over watered. Your ph is probably going through the roof because they're overfed and have accumulated excess Calcium salts which are alkaline.

Talk to me about your water first.

Tap, well or RO?

Then we need to know what and how much you're feeding them. I can tell you right off the bat that 900 ppm is already a red flag.

 

[GrilledCheese]

They all look over watered. Your ph is probably going through the roof because they're overfed and have accumulated excess Calcium salts which are alkaline.

Talk to me about your water first.

Tap, well or RO?

Then we need to know what and how much you're feeding them. I can tell you right off the bat that 900 ppm is already a red flag.

Tap water with a "Small Boy" from hydrologic. I've been feeding them about every 2-3 days. The lighter green one is soaked right now from the flush, so I've got a fan on her bag to help dry her out.

I've been using Age Old nutrients, putting in Grow consistently with no more than 20 ml per gallon. I realized I was overdoing the ppms and have been on a mission to correct that with all the plants. I've been using Kelp, Fish/Seaweed and Cal Mag for additives.