BillyZ
Aquarium Advice Addict
it depends on how you want to wire up the float switch for the auto-topoff (and what kind of float switch you use).
If the RO unit itself will be held in the bathroom and you'll be running 1/4 tubing for the RO water to go to the tank all you will need to run back to the RO unit from the tank is a low-voltage 2 conductor wire. This wire will be connected to your solonoid to control when the RO unit is supplied with water. This of course means you will need power outlets where the RO unit is installed. You will also want an override switch installed so that you can disable the RO unit when you need to do water changes and when you're replacing the RO filter cartridges.
Thats for an electrical float switch and a non-preasurized RO unit. Your other option is to use a preasurized RO unit and a "toilet tank" style float valve on the end of the RO feed line. That would require no electrical wiring but requires a more expensive RO unit.
If the RO unit itself will be held in the bathroom and you'll be running 1/4 tubing for the RO water to go to the tank all you will need to run back to the RO unit from the tank is a low-voltage 2 conductor wire. This wire will be connected to your solonoid to control when the RO unit is supplied with water. This of course means you will need power outlets where the RO unit is installed. You will also want an override switch installed so that you can disable the RO unit when you need to do water changes and when you're replacing the RO filter cartridges.
Thats for an electrical float switch and a non-preasurized RO unit. Your other option is to use a preasurized RO unit and a "toilet tank" style float valve on the end of the RO feed line. That would require no electrical wiring but requires a more expensive RO unit.
