Leaf tips clawing

I feed Monday water Thursday’s flush every other watering with Boomerange and aft flush I run sencyzim through to clean up root zone and make any organic matter avalible for the plant to hold it over while it waits for next feeding. It lets me be in controll of PNK avalible to the root mass as I re set it before nutrient profile changes

https://www.gchydro.com/info/coco-organic-hydroponics

Do you flush??

Usually this would indicate you are giving too much Nitrogen. Luckily in coco an excess (or def) can be fixed quickly and easily. 1- make sure to water with less grow nutes. 1.4 EC is a little high for vegetative. 2- don't let your container sit in the runoff, otherwise plants will reabsorb it, and you don't get the chance to remove excess salts build ups in the coco. Runoff should be sent to the drain. You can look for *pot raisers* they are ideal for coco.

Clawing , death claw can be caused from my personal experience only in two ways - too much nitrogen in food ( that's what's happening at yours plus HP's blast with low humidity I would guess) or very low pH, like 5.0 and lower. Hope you'll find answer, I would slow down with grow nutes or part of, which contains most N, would check canopy temp above curled leaves and would water them full two cycles water, dry, water dry without any additives, just good pH and dechlorination of water. All the Best !

28c temp 5.8 ph 1.4ec