How do I fix this

Hey buddy! This is the beginning of phosphorus deficiency! Spots on the leaves, red stems of the leaves! 👆 Solution to the problem: 1. Set the appropriate pH of your substrate. If it's coco + a mix of perlite, etc., then it's considered hydroponics and the pH for hydroponics is necessary! Set the watering acidity to 5.6-5.7 pH 👌 👆 2. Adjust the nutrients: - cal/mag: 1 ml/l - flora micro: 1 ml/l - flora gro: 0.3 ml/l - flora bloom: 2.6 ml/l I also use nutrients from Flora Series, so my recipe is spot on! 👆 Good luck, buddy! Stay healthy, wishing you growth! ✊😇