i have a used Genesis Automatic Water changing system it looks like the pro model but is missing a cpl pieces as you can see from photo( there web site to my pic) that could be reordered from genesis also one of the nipples on the bottom of the fill container is broken ( see pic)
but the hose you put on it will still go over the broken part so it will not effect water from filling/draining.here is a link to the unit.http://genesisreefsystems.com/product/renew-pro/
i also have a Storm top off unit that hooks up to your ro/di, looks like this one is the basic unit
http://genesisreefsystems.com/product/storm-basic/
it goes with the automatic water changing system so when the system is removing water for the water change this unit prevents the ATO water from kicking on. i never used this system and i did buy it used, i plan on going a different route with no water changes in my system so i will not be using this. i also have the two pumps( new) that you will need for the water change and refill that i will include. because of the shipping cost with this because of its size i will be asking 350.00 shipped for this whole unit. PM is key
i also have a Storm top off unit that hooks up to your ro/di, looks like this one is the basic unit
http://genesisreefsystems.com/product/storm-basic/
it goes with the automatic water changing system so when the system is removing water for the water change this unit prevents the ATO water from kicking on. i never used this system and i did buy it used, i plan on going a different route with no water changes in my system so i will not be using this. i also have the two pumps( new) that you will need for the water change and refill that i will include. because of the shipping cost with this because of its size i will be asking 350.00 shipped for this whole unit. PM is key