Help DWC - Bubbleponic Resivor

Hey, I just got my plants into my new DWC system and im wondering how often should i change the water and clean out the resivor?

I'd go with once a week. Many will tell you that you can go 10/14 days, but I find that once a week cuts down on probs and keeps a well balanced, fresh nute solution for the plants.

aight thanks alot