Plant Deficiency calcium/lockout HELP!

[Ell01]

Hi guys, I am currently getting what looks like a bad calcium deficiency/ lock out have flushed heavily and upped the cal/mag dosage but nothing seems to be working. Here’s a pic of what I’m getting. I’m not a newb grower have been growing in coco years and never had this issue only difference is I have switched from canna coco nutes to Athena blended line.

Any feedback would be great.

 

[TripsRabbit]

Hard to tell with that light, but burnt edges look more like potassium.
I use epsom salt and garden gypsum to amend my plants when they start to get a deficiency. That way I don't lock out the one of the two that they are deficient in since cal and mag lock each other out.
For example, I use calmag but some plants like more Mg. If the petioles start to turn red I add some epsom salt instead of more calmag. If I see the start of calcium deficiency I sprinkle a few handfuls of garden gypsum on each pot.

 

[BurnzYzBudZz]

Let’s see a whole plant pic. I think tripps is onto something with the P def. There’s so many variables that come into play, it could be a number of thngs. What’s your
pH in and out
Ppm in and out
Water source
Auto feed or hand?

I’m assuming since your a seasoned coco grower you keep the coco 90% saturated at all times? I just had to ask.
Burnz