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Thread: H20 RO/DI unit

  1. #1

    Default H20 RO/DI unit

    Ok got all the tubing right. Now I know good water is supposed to come out of the green tube, but why is water constantly coming out of the clear tubing coming from the top tube (which I believe if the DI membrane). I thought that was to backwash the system. Can someone please help me out.

  2. #2

    Default RE: H20 RO/DI unit

    ok I conducted some field tests and the water coming out of the green tube is reading 001 on TDS. The water coming out of the tube from the top with the on/off switch is reading 210 or so. Yes, I have tried turing the blue knob at the top both directions and that shoots the water out of that tube faster or slower but does not stop it.

  3. #3
    Join Date
    02-04-2005
    Location
    nw san antonio
    Posts
    853

    Default RE: H20 RO/DI unit

    while you are running your ro you have 2 flows of water. one is the "good" water that you want for your tank. the other is the "dirty" water you want to get rid of. the one with the lowest tds is the one you keep the other just stub it down the drain..
    Carl

    Why must stupid people infest the world?

  4. #4
    Join Date
    05-14-2003
    Location
    San Antonio, 281/1604 area
    Posts
    3,484

    Default RE: H20 RO/DI unit

    Also when you said you turned that valve and the water started coming out faster from the waste line, that would be your flush valve. Every couple of weeks or so open that valve to where the water is running faster to flush out the membrane. What it's actually doing is running water over the membrane at a fast rate to loosen up some of the larger particles and anything that can be removed in that manner, it helps the membrane last a little longer.

    BTW just for your own reference, that valve is bypassing what is called the restrictor valve.

  5. #5

    Default RE: H20 RO/DI unit

    cool, thanks for the useful info.

  6. #6

    Default RE: H20 RO/DI unit

    You can also use the waste water to water plants and your yard instead of flushing it down the drain. Remember, it has gone through a sediment filter and carbon filter and is not that "dirty" compared to tap water.

    Let's conserve water where we can.
    135 gallon reef and 29 gallon mini-reef.

  7. #7

    Default RE: H20 RO/DI unit

    I have a big green spot in my backyard from the ro/di unit. ;)

  8. #8
    Join Date
    05-14-2003
    Location
    San Antonio, 281/1604 area
    Posts
    3,484

    Default RE: H20 RO/DI unit

    True about what Polkster says. The "Waste" water is much cleaner than your tap water, and even cleaner than most standard house feeding water filters output is. Do with that water what you want, but it's pretty good water.

    I"m thinking of bottling it and selling it as NRR Sparkling Water. The NRR of course stands for not reef ready.

  9. #9
    Join Date
    10-13-2003
    Location
    NW San Antonio
    Posts
    7,113

    Default Re: RE: H20 RO/DI unit

    Quote Originally Posted by LoneStar
    I have a big green spot in my backyard from the ro/di unit. ;)
    I ran about 30 ft. of tubing into my garden and use the flush water to my Hydrangea. Its a wetland plant and doesn't do well in this climate. Mine is about 4 ft. high and covered in 12 inch blooms.
    Gary

    125 SPS, 75 gal. LPS/softie reef, 9 gal. Nano

  10. #10

    Default RE: Re: RE: H20 RO/DI unit

    What color are the blooms? Blue or pink? The color is determined by the Ph, The higher the Ph, the bluer, the lower the Ph, the pinker.

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