In Mexico they are used by condos, and homes, the systems are much bigger but mostly the same as this small one. They add water softener and possibly other items as well to the system. They sell lots of them and there are a lot of water stores in Mexico that sell filters and water and UV bulbs etc. So pricing here is much less. It is not a specialty item like in the US for boats and rv''s.
The UV kills living organisms and other creatures. The other way is to use chlorine bleach. Then you need to know how much water you are putting in and measure the right amount of chlorine bleach.
The black and chrome deck fill is our fresh water fill on the starboard side.
We still need to clean up the wire to inside the boat.
We are also going to add an elbow so the out hose
does not go straight up but over to the tank.