Hey probably a silly question but I was wondering.. is it ok to leave the remaining water in your Ro/Di system after you use it? or should you drain each cartridge after ever use?
I leave my water in there. You don't want the RO membrane to dry out. Also, I have mine hooked up to a container with an autoshut off valve. That way I have a constant supply of RO water.
On a mobile so linking it is a bit difficult, but you need a float valve and then an autoshut off valve. This goes in line with the output and the input. When the float valve closes, the back pressure shuts off the input.