Do I need to stir my nute containers before measuring?

I'm using Sensi Grow and Connieseur Bloom Grand Master and was wondering if it was necessary to shake all 7 of these big containers before I measure them out and feed my plants?

Yes always shake nutrients before preparing/mixing.

Every container? I only ask because each one of these is 6 gallons. If I have to I will but it seams like the voodoo juice and b52 look the same shaken or not

Just shake them or you'll end up with uneven mixes, they don't settle uniformly, the viscosity of each Chem will cause seoeration the heavy stuff always sinks to the bottom. Yes shake all six for emulsification or don't and then you'll learn why to shake.

always do

will do and should I shake them when not in use for long periods of time? I can store enough in a smaller container to last me a cycle but that would be a 4 months with no activity in my big containers will they last longer/be more viable if i shake em? If so how often?

Thanks for the responses guys