RO system
- Thread starter clownvalk3
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CC13
Valuable Member
Not hard at all. You can hook it up the a sink (with a faucet adapter), to a pipe (with a saddle valve) or have a plumber hard wire it in.
Make sure you connect to the cold water line and not the hot water line. Membranes last far longer.
RobZilla04
Well-Known Member
Highly beneficial to have one in your home. Saves trips to the local fish store weekly or more.
Most set ups come with a threaded adapter to screw right to the sink faucet. You could get some additional pieces from ACE, Home Depot, or Lowes and hard plumb beneath a sink or other water line. Very easy and plenty of info online for DIY's.
Make sure you get RODI, not just RO.
Most set ups come with a threaded adapter to screw right to the sink faucet. You could get some additional pieces from ACE, Home Depot, or Lowes and hard plumb beneath a sink or other water line. Very easy and plenty of info online for DIY's.
Make sure you get RODI, not just RO.
RobZilla04
Well-Known Member
Interesting because all recommendations are to run water at 77 degrees F through the systems. That is how they are rated for rejection and longevity. BRS did a video and it's on YouTube.
CC13
Valuable Member
lol how do you measure mixed (cold and hot) water threw the system?
77 degrees may be ideal but hot water ruins the filters and cold water is perfectly fine and maintains filter integrity. Another major problem with using mixed water from the 'hot' line is there is a tenancy for hot water tanks to rust out. You absolutely don't want rust that in your aquarium water.
https://www.reef2reef.com/threads/watersource-for-rodi-from-water-heater.418680/
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RobZilla04
Well-Known Member
I completely agree. Not sure whether BRS was trying to sell something (doubtful) or providing good information. They actually advise not to guess when trying dial hot and cold knobs providing water through the faucet to the unit. Rather they advise having a temp gauge along the in line before water goes through the first canister. That way the "ideal" temperature can achieved.
When plumbed to a single line, hot or cold, no adjustment can be made. Better to be on the cooler than the warmer side. So your tip is well advised.
CC13
Valuable Member
Ya I agree, BRS may very well be right with 77 degrees being the most ideal. That may be the sweet spot between ideal rejection and production rates as well as membrane longevity.
I feel the risk of rust from the hot water tank and the difficulty in dialing in exactly 77 degrees for your RO/DI system to maintain 77 degrees would be far to high and difficult to not run the unit completely off the cold water line. Any calcium or deposits that block the cold line over time would result in the temperature exceeding 77 degrees and you destroying all your membranes lol.
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RobZilla04
Well-Known Member
They don't mention the simplest of ways to check the "faucet dial" method, so I'll post mine here. Just turn the flush line to open and test the temp of the water that is simply passing through the membrane. Once its between 70-80 close the flush valve and begin to produce RODI. 
Potatohead
Valuable Member
The problem with using warm water is your hot water tank is most certainly adding a lot of TDS to the water. So it will produce water faster but you'll burn through resin faster too.
CC13
Valuable Member
That is sort of like asking what does a car cost.... there are far too many variables and cars to give an answer.
How much water are you looking to make in a day? I have a large system so my units can make 200 GPD (gallons per day). I would assume for your size take a 90 GPD unit would work just fine and a good unit from spectrapure is a good investment. If you ever need more output, you can always add another RO membrane and double the output.
https://spectrapure.com/RO-RODI/RODI-SYSTEMS/CSPDI-Standard-90-GPD-RO-DI-System
To hook the system up, it doesn't cost much at all assuming your connecting to a sink faucet or saddle valve to a cold water pipe. If you want the unit hard plumbed then it will cost you a little more to have a plumber and do it for you unless your comfortable with doing it yourself.
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acabgd
Active Member
That really depends on the water quality in your area, but there are so many variables that it's just much safer to go with RO/DI straight away.
And if you're asking about RO water from your LFS or Walmart - don't do it. It's way easier to have your own source of water. Lugging around 5g buckets all the time gets tiring very quickly.
PatW
2500 Club Member
Bulk Reef Supply has an entry level system for about $150. Spectrapure has a similar system for a bit more. A high end BRS system costs about twice as much as the entry system and Spectrapure’s high end system is about 2.5 times the base system.
CC13
Valuable Member
Buy your RO/DI unit. You save lots of money in the long run and also can ensure your TDS are 0.
If you want to hold off, you can also use distilled water from the grocery store. It will cost you more but in my area you can find 1 gallon of distilled water for about 0.99 cents.
PookieGV
Active Member
clownvalk3
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So if I got this one, does it tell me how to install it? I have a bathroom in my basement that never gets used so I am looking to use that sink.
PookieGV
Active Member
No it doesn’t really come with instructions. If you look at my picture, the black plastic in the center of the picture is the part I bought from BRS. Prior to installation, the silver hose was connected directly to the silver valve. These parts simply twist on and off ( i also used a little aPlumbers tape). If your sink is plumbed differently it might be more involved.
BRS sells two sizes so you should take a look under your sink before purchasing.
BRS sells two sizes so you should take a look under your sink before purchasing.
