Which type of RO do you have, I have a no-waste ultra filtration system similar to ro but unfortunately most minerals go through it but not chemicals or bacteria., Let us knowI unfortunately use a lot of water, with a large RO/DI system and can't keep it all. Luckily it is a 1:1 ratio so that helps with waste. But we also have a ridiculous amount of plants so that's one use
Here's mine