Some beginner questions about S/H

[DirtyCoconuts]

Thank you for taking the time, Ray.

If I understand you correctly on the last question, I should then do a full flush and fill on my outdoor plants everyday if they are drying out that fast.

On the flip side...I have two plants in my bathroom and they are drying out very slowly, more like three-four days before I see any noticeable reduction in the res. Is there a rule of thumb for how long you should go between flush and fills if the water does not demand it first?