Need help with first grow

Looks like calcium deficiencies

Calcium deficiencies are more likely to appear when…

• Grower is using filtered or reverse osmisis (RO) water to feed plants – the amount of calcium found in tap water varies, but some tap water has enough calcium to prevent calcium deficiencies
• PH is Too Low – If grow medium is acidic (below 6.2 pH, Calcium can get locked out even if the Calcium is physically there)
• Growing cannabis in hydroponics or coco coir without supplementing extra Calcium (it’s recommended to use a Calcium supplement in hydro or coco)
• When growing in soil that hasn’t been supplemented with calcium (usually from dolomite lime)
• Too much potassium can also sometimes cause the appearance of a calcium deficiency
• Outdoors – calcium deficiency is more likely to appear in acidic soil (below 6.2 pH)