Foxfarm BushDoctor & Big Bloom?

Ok here's my question:
I have some leftover BushDoctor Calmag from Fox Farm, prob won't use it next year, as it'll be a year old. Plants in flower, got some FF Big Bloom. Should I mix them and give them a treatment of both, before I switch to just the Big Bloom? Also, doesn't quite have the high P levels I like for flowering nutes. Any and all advice welcome!

I am currently using some 5 year old botanicare nutes with no adverse effects. I wouldn't think that being a year old would make em not usable. But, im just guessing.

Chances are when you buy it, it's already over a year old.

You will need tiger bloom as well. Big bloom is only the “base” tiger bloom is the bloom feed for that line of FF nutes.