If Ca is low, you need to play with the calculator to adjust dosage of calmag in addition to your other products until you get a total of 100ppm of Ca..
GD truncated my response.. i may not recall all i wrote... But, i'm sure someone will be incredulous about this answer, but that someone has never taken organic chemistry nor microbiology. The concepts at play here are beyond human eyes, ears, nose resolution. The concepts are generational knowledge passed down by really smart people over centuries of work and experimentation as well as technological advancements. The cause and effect of what i mentioned is how this works. coco isn't magical. it's just a water retainer. It's a soilles substrate and you treat all soilless substrates in near identical ways.
ratio of nutes and concentration of total nutes fed are what you want to focus on while you observe and adjust. If you do, it won't be long before you have a dosage of all your products that gives you incredibly healthy and fast growing plants, relative to your environment, from seed to harvest. (senescence is sometimes unavoidable but cetainly no burnt to shit canopies, even with an extended flower phase)
npkCaMgS - 120+ / 50+ / 180+ / 100+ / 50+ / 100ish PPMs -- these are safely low and you probably need to go higher on a couple of them.. it's roughly a 1-1-2 NPK and 4-2-1 KCaMg ratio of label percentages not ppm. So if you did a weighted average based on dosage / total dosage added of products, it should be similar to these ratios. These are ballpark ideas to give small whole number integers... expect deviations, but a good place to start and adjust quickly to very small issues that progress slowly and are easily identified.