Adding a small amount of calcium is ok especially in the form of dolomite and if soil is already low in calcium. If your soil is above 5pH I would think twice. My natural soil is 5.5 pH and citrus are healthy. I have only used a little dolomite and rock flour and thick mulch of course to raise it a little. I know people who have caused all sort of problems by going crazy with lime and even gypsum.
Excess calcium decreases the availability and uptake of N, K, Fe, Mn, Zn and even P. Knowing what your soil has excesses and deficiencies in (even from a regional soil type perspective) helps in knowing what to apply. Knowing the nutrient antagonisms of what you are applying in large quantities will help with fixing created problems afterwards. Over-application of additives and fertilizers is pretty common. Looking at leaf deficiency symptom charts afterwards to know what to add next can get you in an over-application cycle.