Autoflowers ph issues?

[Share_The_Pain]

Hi all, hope everyone is safe and well.

I tested my ph before starting and the reading we're slightly higher then 7.5... But I thought since I'm using a soiless mix with plenty of organic matter...

I did the following in a 25liter container I've used coco coir with perlite and a light touch of dolomite lime in the bottom of the bucket, in the middle bio bizz light mix with a little of worm casting, and a mixture of Seafeed Chitin Enriched Shellfish Compost and perlite (1 part each), to make a seedling compost.

I don't know if it's because of the high humidity (I'm trying to give them 70% humility but sometimes they get more then 80...), or too much light heat or even the ph, I tried to research on the web but couldn't find a solution...

Should I simply leave them and cross my finger or... Use a mixture of vinegar, or even put a bit of calmag...

Thank you all for your time and help, stay safe. Bless you all

 

[AgentPothead]

I'm pretty sure 7.5 is way too high and you are getting multiple nutrient lockouts. These are the charts I always use. Those blueish tips look hella familiar, I'm pretty sure it's a deficiency, but I cannot remember.

 

[aridbud]

Yup, Agent Pothead is correct-o-mundo! Something's going on! ;o)
Phosphorus abundance....that's my guess...dark green with bluish leaf tips. Dial it back. Clawing= overwatering.