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  1. #11
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    Quote Originally Posted by reeftopia View Post
    Since I make up to 300 gals a week have considered doing just that. Drawback is my numerous flower beds are all a long way off.
    Short of packing it looks like a lot of work.
    What rodi unit do you use? Mine is a bra 6 stage and is so dang slow. I want something faster.


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  2. #12
    Supporting Member Cody's Avatar
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    Quote Originally Posted by chris85 View Post
    If you need more pressure than that...you could use a pressure tank like on an ro unit or a well tank. Just fill up an empty tank air tight tank with the discharge water and that should give you enough pressure.

    How far are you trying to run the watering system?
    The yard is relatively small. I think a single 100' tube could hit most everywhere that I want considering that unit is in the garage. Gregg does a similar thing with his discharge and I might do the same and periodically just move the one discharge line.

  3. #13
    Supporting Member Cody's Avatar
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    Quote Originally Posted by mittens View Post
    What rodi unit do you use? Mine is a bra 6 stage and is so dang slow. I want something faster.


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    As long as you have adequate pressure (typically provided with a booster pump) just switch out the membranes for a higher flow rate whenever your current ones are exhausted, and change the flow restrictor. I started with a simple three stage a decade ago but have gradually added piece by piece. I now have dual 150gph membranes and I have a faucet for an RO unit.

  4. #14
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    Quote Originally Posted by Cody View Post
    As long as you have adequate pressure (typically provided with a booster pump) just switch out the membranes for a higher flow rate whenever your current ones are exhausted, and change the flow restrictor. I started with a simple three stage a decade ago but have gradually added piece by piece. I now have dual 150gph membranes and I have a faucet for an RO unit.
    My psi is 40. That should be within normal limits.


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  5. #15
    Supporting Member Cody's Avatar
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    Quote Originally Posted by mittens View Post
    My psi is 40. That should be within normal limits.


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    I meant in range of what the membrane is rated to accept. Iirc, my membranes are more efficient with a higher psi. After my booster pump I'm hitting about 85-90 psi and can crank out about 340-360 gpd if my calculations are correct.

  6. #16
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    Quote Originally Posted by Cody View Post
    I meant in range of what the membrane is rated to accept. Iirc, my membranes are more efficient with a higher psi. After my booster pump I'm hitting about 85-90 psi and can crank out about 340-360 gpd if my calculations are correct.
    Iím gonna have to look in to getting a booster


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  7. #17
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    Quote Originally Posted by Cody View Post
    As long as you have adequate pressure (typically provided with a booster pump) just switch out the membranes for a higher flow rate whenever your current ones are exhausted, and change the flow restrictor. I started with a simple three stage a decade ago but have gradually added piece by piece. I now have dual 150gph membranes and I have a faucet for an RO unit.
    Careful though, the higher flow membranes have a lower rejection rate, so you'll make more water faster but you'll use up DI resin much faster too because of the higher TDS water making it to the DI stage.

  8. #18
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    Quote Originally Posted by mittens View Post
    My psi is 40. That should be within normal limits.


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    Like Cody said, most membranes require a minimum of 50 PSI to function most efficiently, with higher pressure correlating to mor efficient processing of waste and a lower water/waste water ratio.

    I'm running an 8-stage and had to get a booster pump as I was recording a pressure around 40 PSI. I'm rocking 90 PSI right now. Making less waste water and saves me money on DI Resin.

  9. #19
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    Quote Originally Posted by ATXacrofarmer View Post
    Like Cody said, most membranes require a minimum of 50 PSI to function most efficiently, with higher pressure correlating to mor efficient processing of waste and a lower water/waste water ratio.

    I'm running an 8-stage and had to get a booster pump as I was recording a pressure around 40 PSI. I'm rocking 90 PSI right now. Making less waste water and saves me money on DI Resin.
    What pump do you recommend?


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  10. #20
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    Quote Originally Posted by mittens View Post
    What pump do you recommend?


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    The industry standard is the Aquatec booster pump. BRS sells it... You'll want the solenoid shutoff kit with it too so it can shutoff the pump automatically when your float valve pops up and stops the flow of water.


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