Pro tip: I use a traffic cone upside down to refill my tanks, very simple little mess. I also use window screen material at the bottom of the traffic cone connected to sewer system clean out to catch remaining resin when I rinse out my tank .
I don't have the same tank but this video is pretty much straightforward, thanks! Was cleaning a house today at 38ppm and it left spots so I will have to clean it again next week for free. Customer satisfaction I guess? XD
I order from Windows101 but I don't know if they ship to Canada. You can also order them on Amazon. I made a video about this tank here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-f19g41-3FE0.html
I am not sure off the top of my head but you can probably look into the specs of everything by looking it online. I put links to the tank setup in the description.
Here: www.windowcleaningwarehouse.co.uk/resin-calculator.html use this link to calculate how much you can save by using an RO prior to the DI. For example - if your feed water is 385 and RO rejection is 96% you will have around 11PPM of product water. Input that figure into the calculator - say you will use 40L of product water for 2x days a week with a 10L mix bead resin, you will have theoretically 318 weeks worth of working DI resin. But keep in mind that DI resin will start to degrade after a year of installation despite how little your throughput is.