Calnit (the white pellets) is a pain to dissolve. I have finer calcium nitrate in a bag and i mix it in the nutes today to use tomorrow.(a different product). Warm water helps but i just shake it every now and then with room temp water and it dissolves. Overnight they are homgoenous with a shake.
With MC i went back to dry weight measure. For veg i usually use 16 grams per 5 gallons and if they look like they need it i will add cal mag.
The concentrated liquid formula was messier, REAKED and its almost done. I used it on the veg garden
Plants love it in veg. The lawn likes it too. I will always use it dry now i just use a smaller plastic container to hold it so the whole bag remains dry and loose.