I've just got a new drip system and it has an 80ltr tank, how often should i change the water, an should i clean the tank every time i change the water?

Thank's.

Hydroking.
hydroking Reviewed by hydroking on . Drip system? I've just got a new drip system and it has an 80ltr tank, how often should i change the water, an should i clean the tank every time i change the water? Thank's. Hydroking. Rating: 5