This is an Optima automated professional from Purely H2O. It has the 150gpd membrane upgrade (which helps a ton! I fill a brute 32 gallon can in under 6 hours!), auto-shutoff built in (all you need is a float switch), and flush valve kit installed. The dual tds meter and pressure gauge are not functional any longer (which is why I replaced it....I use them both a lot!). I recently upgraded and no longer need this RO/DI ( reverse osmosis deionization ) system.
I have used this for about a year and a half for my 2 large saltwater fishtanks with no issues.
The system works just fine and produces 0tds water with new di resin. The ro membrane and prefilters were replaced about 3 months ago.
Any questions...just ask!


Larry
360-918-3807 (text or call during normal hours :-)