Okay than please come back after 10 days and refer how it goes then. Also you may not mind to share your supersoil receipt? I can only guess from those pictures this is just classic peat perlite lime ewc, which has almost nothing to do with organic grow. And most likely underwatered by the look. You are talking about calcium and posting fan leaves. There is much more behind when it comes to deficiency symptoms and 9 out of 10 cases is not because of the absence of the particular element but something else is off. Forget please about vinegar and other pH droppers when growing in peat from now and on forever. No offense of my side dude just my spliff. Have fun thats the most important thing.
The contents of my "super soil", it was almost perfect until literally 4-5 days ago when I tried adjusting the PH. Up until then it was just a couple of the plants had slight yellowing so I thought i'd experiment with lowering the ph, live and learn.
Super Soil Green contains Perlite 20%, Vermiculite 10% and Soil Booster (Organic Soil Conditioner and Fertilizer). Super Soil is bio-inoculated with mycorrhizal fungi and beneficial microbes that boost your plants’ performance. The ideal air-to-water ratio promotes massive root growth and enables sufficient drainage. 20 premium ingredients : Perlite, Vermiculite, Mycorrhizae, Worm Castings, Blood Meal, Bat Guano, Fish Bone Meal, Kelp, Epsom Salt, Dolomite, Azomite, Humic Acid, Gypsum, Rice Hulls, Pumice, Oyster Shell, Soybean Meal, Alfalfa, Coco Coir, Fish Amino Acid (FAA), Soil Booster (Organic Soil Conditioner and Fertilizer)