Kinezokyprios
Perverted Mind, Pure Heart.
Use the cal mag supplement you have, it is only for 2 watering sessions. And of course continue with your feeding schedule as you were. Next grow consider changing the type of feeding you use. Liquid fertilizers are very expensive and no matter if they are organic or not, they are not the best solution for autoflowers in soil. Stay away from all synthetic fertilizers (you smoke this weed, it goes to your lungs), although they do produce big quantities. Use dry organic/biological fertilizers for tomatoes, peppers and roses and plain water. With very little amount you get the optimum result and the plants are growing happy with no issues. Focus should be on issues like light efficiency, temperature/humidity control and ventilation. For example 99% of cal mag issues are actually temperature/humidity issues. We all follow the quick and dirty path of adding cal mag, but the solution is adjusting the weather inside the tent. These are just thoughts, not really advice, but I think you get my point.