Whag deficiency is this suffering from?

For general elements something like, molasses, kelp, basalt or other rock dust...basically whatever microelement kinda stuff you got. Though keep in mind, what I said is very speculative.

First look says sulphur, though probably pH related too. Eyeballing it based on your info (compost and coco), I'd use calcium, magnesium, sulphur and something with fairly general elements. Either calcitic lime + epsom salts, or gypsum + dolomitic lime. Compost should typically have decent nitrogen, but I figure pH is too low. Some compost though, is very bland. So it kinda depends what compost it is.

Maybe some nitrogen deficiency? But idk im still learning, but i heard they suppose to have nuttrients within themselfs for the first two weeks. Maybe it isnt a deficiency, maybe ph? I also would like to know more about this ^^ Good luck bro, should bounnce back easily once you figure it out!

Peat free compost and coco soil, haven't added any nutes yet because I didn't think you were meant to so early on, distilled water, indoor and around 18 celcius...humidity stays around 68 :)

Hello, if you could provide some more info I’m sure someone would be happy to help. There just isn’t any info as to what you have done in your process. What type of soil are you in?Have you fed it any nutrients? Type of water used? Indoor or Outdoor Temperature Humidity