Gabriel...not trying to get in your business, so take this for what it's worth. But if you wanted to do away with lugging the buckets (which was my ultimate goal), you could put a T off the output side of your pump at the RODI container. Install a ball valve and hose bib converter on the T and run a hose to your top off container at the tank. Put another ball valve on the end of the hose, turn the pump on, and refill your top off. If you find the flow too low, simply install one more ball valve after the T, between it and the salt bucket. I apologize if I'm overstepping here, but I just cringe when I hear "bucket". You have a nice system there that could easily be adapted. Feel free to ignore this, it won't hurt my feelings!