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  1. #1

    RO newbie advice

    I'm looking to go down the RO route, but it's a whole new ballgame to know which system to buy.

    I have a 2200 gallon pond, and my present three pond purifier is housed remote to the pond and 1/2 hose is run underground to pond to trickle feed.

    Looking at systems online it looks as though the 4040 units have a hose size that would be compatible and use my existing three pod as a pre filter.

    Any thoughts/advice or recommendations for suppliers etc gratefully received.

    Dave



  2. #2
    Extreme Koi Member Rank = Nanasai enoch123's Avatar
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    RO unit

    hi,phone darren at absolute koi,he made mine up and fixed it to a board for me,it has an auto flush,low pressure switch,a good quality booster pump,tds meter in and out of the unit,its a 450gpd unit,i expect that would be best for your size pond!forget a bigger system,or 4040 unit,too much RO water and far too much waste product going down the drain

  3. #3
    I've got a 450gpd unit on my 2500 ish gallon pond.
    I think it's about the right size (sometimes I think I should have gone bigger but most of the time I think it's right)


    Sent from my iPhone using Tapatalk

  4. #4
    Extreme Koi Member Rank = Sansai finkoi's Avatar
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    Hi Dave

    As John has said a 450gpd would be fine for your size pond.
    Give Vyair a ring they will give you a good price on a unit.

    Andy

  5. #5
    Thanks for the advice guys, one other quick question;
    How do you all mix your mains and RO water?

    My water treatment is set up remote to the pond and fed in a constant trickle via an underground 20mm poly pipe, so I will have to mix the two and utilise the current underground feed pipe to pond.
    What I am thinking is, to reduce my current treated water supply down to 1/4" adding an in line check/one way valve and a control/flow valve, insert a tee piece and bring my RO water onto the tee piece with a matching one way and flow valve, the outlet from the tee piece would flow to the pond. This way I could (in theory) control the flow of mains or RO to achieve the desired TDS at the outlet.

    Comments please or is it a case of try it and see......Lol

  6. #6
    I don't mix it. I add just RO water and use sodium bicarbonate to hold the KH / pH

  7. #7
    Well my new toy arrived today, 450 gpd with auto flush, pump and in & out TDS meter.
    I'll hopefully make a start on the installation this week and i'm going to experiment with mixing my mains and RO, as i don't want to take the PH too low.

    What PH and GH & KH are you all running at?

    Dave

  8. #8
    pH 7.9
    GH 10 mg/l
    KH 75 mg/l
    At last test.
    I'd like pH lower but can't get the KH without it being up there and without the KH my shower doesn't process nitrite very well.

  9. #9
    Hi Dave,
    Do you know the KH, GH etc… of your source water?
    My current readings are…..

    GH 20ppm
    KH 15ppm
    TDS 55
    PH 7.6

  10. #10
    These are the readings i have to date. I now have had my RO up and running for the past couple of days and playing with the RO/Mains mix, so i'll take some fresh readings today.

    Pond

    TDS 283
    KH 18
    GH 14
    PH 8.2
    Ammonia 0
    Nitrite 0
    Nitrate 15


    Out of the tap

    TDS 283
    KH 18
    GH 14
    PH 8.2
    Ammonia 0
    Nitrite 0
    Nitrate 10

  11. #11
    Quote Originally Posted by Dalesman View Post
    These are the readings i have to date. I now have had my RO up and running for the past couple of days and playing with the RO/Mains mix, so i'll take some fresh readings today.

    Pond

    TDS 283
    KH 18
    GH 14
    PH 8.2
    Ammonia 0
    Nitrite 0
    Nitrate 15


    Out of the tap

    TDS 283
    KH 18
    GH 14
    PH 8.2
    Ammonia 0
    Nitrite 0
    Nitrate 10
    Very similar to my tap water
    You should be able to run neat RO for a while until you get down to where you want to be, then start mixing tap/RO

 

 

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