RO doesn't work well on hard water, so you may need a water softener.
You would do well to give up on the standard under counter type of RO and go with the Merlin. It produces .5 gpm per minute without a storage tank. If not then you should go with a 200 gpd and possibly a pressure booster pump to get more production. Then any size storage tan k you want but it has to be set up for RO use, meaning much less captive air pressure above the bladder.
You would do well to give up on the standard under counter type of RO and go with the Merlin. It produces .5 gpm per minute without a storage tank. If not then you should go with a 200 gpd and possibly a pressure booster pump to get more production. Then any size storage tan k you want but it has to be set up for RO use, meaning much less captive air pressure above the bladder.