Too much N?

3-1-3 grow with 2-0-0 calmag would end up with too much N ratio for veg?. Would you use the cal mag at half the value of the grow?. Say as example 1/2 grow - 1/4 calmag.

If you were to use a bloom instead with say 2-2-3 that would give a better ratio once adding the cal-mag and would then allow half strength on both?.

I recommend reading the first page of this thread: https://www.rollitup.org/t/npk-changes-from-calmag.908512/

I covered it more in depth than you may need, but it should help you understand things a little better.