Jaz, one thing to keep in mind is RO uses a lot of power. Most are used when the engine
is running to charge the batteries. So a 10gpd would have to run 24 hours for 10 gallons and a 100 gpd would have to run 2.1 hours for the same 10 gallons. You need to figure power usage also how much it needs and how you will get it. Its not as simple as just getting a water
maker. You may have a large battery
and a gen set and power may not be a problem. But a lot of sailors charge there batteries a couple of hours a day and get a RO system that would replace the water
needed in that same time.