DP Blackberry Kush Auto DWC Deficiency Issue

[Cruciality88x]

The white on some of the edges is because I added a humidifier a few days ago and had it pointed at the plant a bit too much and the water I have in it is a bit hard I believe leaving a white residue, don't usually use it at all in any part of my grow.

 

[Cruciality88x]

 

[Waira]

- mate, I'm going to move this to the Infirmary,.... Can you get me a couple whole plant pics too? I'd say this is Ca defc. starting to kick in,... likely res' temp related,... I'm not a hydro guy, so I'll tag in @MedGrower for a consult,... might be that the higher T is causing the Ca cross react,..? Res solution looks OK after that high temp spell? Also, Ca availability seems to get dicey when you're near 6.0,....

 

[MedGrower]

This is typical issue we see often with DWC around this age. High PPMs combined with low pH will make it very challenging for the plant to uptake enough Ca.

I always advice to make sure you are having decent amount of Ca, Mg and Fe in your reservoir and set the pH at 6.2 to 6.3 for a while until the plant is more mature.

Why the feed is so high? I rarely ever have a peak feed over 700 ppm. Typically more like 600 ppm. This with base water level being around 75 ppm. I'd also recommend keeping your feed down where stays stable in the reservoir as the plant consumes both water and the nutrients.

Hope this helps!

 

[Cruciality88x]

Awesome, thanks for the advice, I have the PH set to just a hair under 6.3 at the moment, hopefully this helps out. I really just don't have a great feed schedule or an idea of one for my nutrients and the plant I have. I've googled and haven't found anything close to what I would like. Dutch Passion Blackberry Kush Auto in DWC with General Hydroponics Flora Trio Nutrients & Calimagic & Hydroguard.