Thanks for posting this... super helpful!@landlubber if your interested or maybe you have seen it I don't know. Maybe not??
I did make a video on mixing up components 1,2,3 . It's pretty detailed and in it I use the 5 liter jugs.
Here it is.
Have been using the pre mixed comp 123 but will start mixing my own this weekend. Just to confirm, the homemade mix is about twice as concentrated as the pre-mixed.(?) So I'll adjust my daily dosing by half to start, test and adjust, correct? Any other suggestions?

If you don't want to mess with all RO water , measuring mixing etc you have ready to use "plug and play" solution or if you want to go DIY (more economical) you have second solution.

