I use old washing machine hookups for my ro
unit. I've used BRS and currently running an aquatic life twist ro
unit. It's as simple as just screwing an adapter onto the 'faucet'. You might want to get yourself a pressure gauge, as 90 psi is best for ro
water creation, and a TDS
meter to go on your clean water to help gauge when its time to change out resin and filters. Both are cheap and easy to add on to any ro
unit. If you're low on PSI, a booster pump is equally cheap and easy to install.