How Do I Know When The Tank Is Ready To Refill?
Base the refill time on the coverage recommendations of the products put in the system and your desired results.
You do not have to refill the system when it is out of product.
For example, if the amount of product put in the system is based on monthly coverage, refill every month. You can tell when the system is out of product when there is no colour in the clear line when the system is running. If the product you are adding to the tank does not have colour add food dye.