Mixing Nutes, is it ok?

Is it always ok to mix nutes? I know advanced nutrients brand products come in separate bottles but can then be mixed in water if added correctly. What about cross brands? For instance...

Could I mix tiger bloom and kool bloom in the same solution without having any problems?

How about alternating, could that cause problems? For instance say I'm in week 6 of flowering and I'm hitting my plants with 1000ppm of nutes every other watering (so once every 4 days.) What if I do 1000ppm of tigerbloom + big bloom during a watering, then the next watering is just pHed distilled water, then the next watering is 1000ppm of koolbloom, could this cause problems with my plants?

rotating nutes usually isnt a problem because they are simply different combinations of the same nutrients, just give them the required dosage, Using distilled H2O between feeding will also help keep your buds fresh tasting. And make sure to flush at least a week prior to harvesting.

Fantastic, thanks for your advice. This is what I wanna hear (+rep) but I'd like some more confirmation!