@Bammer1082 I do a 50% water change when I feel like it, usually at the end of a grow. I use the water I remove diluted in bubbler buckets for for growing runts , clones and cuttings.
I’m not suggesting this is the right way, just my way. I run my rdwc as if it’s an aquarium and am considering adding some algae eating snails.
During the spring and summer, all my juice from hydro goes to the outdoor garden, and house plants, or shrubs around the house.
It will not save well. Or I should say, I did not store it good enough to hold very long.
This is also what I do. Especially after we planted some trees in the backyard. I’m not sure if it really helped but they sure grew faster than I expected lol