Hey RC! Sorry let me clarify for you!
I do mix them in the same JUG but ONE at a TIME. It is not recommended to mix veg and bloom together so I have never done that. I take my veg, measure it out, dump it in my 1 gallon jug, cap it, mix the crap out of it, un cap it, take my bloom nutes, measure, dump, cap it, shake it, etc... Repeat for every additive one at a time. So you can mix them all together in the same jug, just not together... I know they will essentially be together in the same mixture but you can do it. Also, let me add that is with Organics! With Chems you may want to give it to them seperately. Like one day give your veg, next day bloom, by themselves... I don't know if your organic or not but that's what's been recommended to me and what I've always done. Works well for me.
Right now I'm using SeaGrow 4-26-26. It's Veg & Bloom already together. It's also organic. Perfect for Autos. I hope this answers your question. If you have any more questions don't hesitate to ask.