A question regarding coco, salt buildup, and flushing

ok so lets say you have a coco recirculating hydro system. watered once daily.

there is a possibility that you can over fert things by giving too much. with coco you can def have too much if you dont rinse thoroughly.

what if you had 2 resoviors. one with nutes and one with just water.

you could alternate them so they get strong nutes every second day, but get flushed with pure clean water every second day.

would that have any benefit do you think?

its just one of those crazy thoughts i come up with.

or flush with the clean water 30 minutes before you re feed with fresh nutes every day is another option.
just somehow rinsing the medium before feeding it seems like a good idea to me

if you were to run clean water through your system once a week you would not have to worry about buildup, and beware that the buildup will raise your ph even in small amounts