Two problems. I had deficiencies this year when I bought a batch of acidic soil from an actual grow shop. It gave me magnesium problems a few weeks in. I used calmag but was still affected. I bought a lot of this soil and had to try and amend the remainder I hadn’t used at the time with dolomite lime. It did help but it’s no good when soil ph is too low to start with. I was messing about testing different soils made specifically for this industry, most had a slightly low ph and I finally came away from synthetic soil and food and ditched them for organic types. Then I started using a blend of coco in with my soil, adding charge, bat guano and dolomite lime. Watered with enzymes at times and made the odd tea. The leaf shine is incredible and they don’t show a hint of nutrient problems ever. I don’t even feed hardly, unless the plants tell me to.
Give your plants a good flush first with a very weak solution of just bloom no boost and add a quarter strength of calmag. Don’t let them sit in it.