Yepp started out as a 3 filter RO and wasnt making enough water for my 30g Nuvo so I had to upgrade. First is a sediment tank, water softener, brine tank for softener, than 2 carbon tanks. The RO is a 9 membrane ro making 14 g/min feeding a 200g storage tank. Than through a 220 volt UV light followed by 4 endotoxin filters. And into my nuvo as an ATO.
This is in my basement. aka my MAN CAVE ;-)