I thought this was worth mentioning as I have seen a lot of high protein soylent recipes with 1g of calcium total,
My understanding is that a high protein diet leads to an increased level of calcium expelled in urine, raising the calcium requirement for that person.
Body building forums seem to recommend 1g calcium per ~50g protein per day. I do not know if this is correct exactly, but it is worth looking into. I especially see a lot of keto soylent recipes with ~150g protein and ~1g calcium.
Some of the recipe templates at diy.soylent.me/recipes should be changed if this is correct.
I hope I am not wasting your time with things you already knew!
Thanks for reading.