Leaf septoria?

Hey, your diary list you are feeding them the dry amendments every week at the rate of 54ml/l guessing this is 54 ml per pot or over all between all the plants. Typically dry amendments are feed one every 3 weeks, I did weekly feedings in my blue Cindy journal and it turned out ok but did not fully grasp if it made all that big of a difference. One other note on dry amendments they normally have good amounts of calcium in them but not a whole lot of magnesium. I would look at the ingredients or formulation of whats in that one and try and determine what its comprised of. I use Gaia Green and notice my plants need a Magnesium top up at least twice in the grow. Helps green up the plant a lot. Also the extra calcium in the dry amendments will also keep your soil ph a bit lower, could try 6.4PH for a week or so to see if it helps. epsom salts are great cheep and fast way to introduce some magnesium into the medium. Best Of Luck! ***disclaimer, multiple people are answering all questions as there is a contest called GOTM, when a user is selected as the answer they get a point. Please see the contest page for information regarding the details: growdiaries.com/giveaways/GotM-August-2022 Please note, when you reply to anything on the questions part of Growdiaries website, no one will be notified of this. Not even if you use a "@" tag in their name. Best to reach out to them in DM using your inbox, it can be found in the bottom right hand corner of the site. It's the small paper airplane button, it will be highlighted green if you have new messages***