soil type

If you're still in Promix HP, start adding nutes - you're fine with very light feedings but make sure you're supplimenting Calmag on top of your light feedings of base nutes. For promix HP, feed/water at 5.8-6 ph. If you call Promix, they'll tell you water PH doesn't matter, the alkalinity of it does. But I have hard water, and it's fine if I ph it. To my unexperienced eye, it looks like a lockout or a N deficiency. Check your runoff PH. Should be 6-6.8 in Promix. Anywhere outside of that range is your problem. If you haven't fed and you're still in promix, that's your problem. If you've done everything right, then I have no idea! haha. Good luck!

Sounds good mix , make sure it’s draining easy and if not , add some perlite . Another usual mistake I used to do aswell is that you shouldn’t pack soil or bathe pot with a lot of force . Just tap the whole pot into the ground some times and the soil will cover possible air pockets . But it’s important the soil to be airy and fluffy for healthy and oxygenated roots ! Keep it up ✌️🌱🖤

The soil should be airy and draining and slightly acidic at 6.5 with coco, sand, perlite, clay, etc. Everything is fine as long as it's specific for cannabis; it's important to add a rooting agent if transplanting and try to transplant as little as possible.