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  1. the_h2o_guru
    Post

    Ro/DI

    Dustin, your membrane (from the TDS test results you mentioned) has about a93% rejection rate. Are you on city water or well water? What is the GPD...
    Post by: the_h2o_guru, Jul 13, 2007 in forum: Filters, Pumps, etc..
  2. the_h2o_guru
    Post

    Info on Chemistry

    They have some books on Amazon. Here is the link that I found: Amazon.com: Water Chemistry for the Marine Aquarium: Books: John H. Tullock
    Post by: the_h2o_guru, Jul 10, 2007 in forum: Water Chemistry
  3. the_h2o_guru
    Post

    Thanks for the help

    You're very welcome. If you need anything else, let us know. Don
    Post by: the_h2o_guru, Jul 9, 2007 in forum: Air, Water & Ice
  4. the_h2o_guru
    Post

    Ro/DI

    The in-line TDS meter isn't readin the tap going in, but it is reading the TDS coming out of the membrane. That's why it's only reading 003 ppm on...
    Post by: the_h2o_guru, Jul 9, 2007 in forum: Filters, Pumps, etc..
  5. the_h2o_guru
    Post

    Ro/DI

    Something is very wrong with that. What is the TDS of your tap water? Either way, something is getting through your membrane and killing off the DI....
    Post by: the_h2o_guru, Jul 6, 2007 in forum: Filters, Pumps, etc..
  6. the_h2o_guru
    Post

    Algae won't go Away

    Running water through a DI first, then the RO last is useless. The RO process reduces the amount of work the DI has to do. What you want to do is buy...
    Post by: the_h2o_guru, Jul 2, 2007 in forum: Algae
  7. the_h2o_guru
    Post

    Algae won't go Away

    It just sounds like the filter you have is not cutting it. You may need to simply get a RO/DI unit. You need to remove those nitrates completely out...
    Post by: the_h2o_guru, Jun 28, 2007 in forum: Algae
  8. the_h2o_guru
    Post

    Ro/di Gpd ??

    Hello, The GPD usually depends on the water change amount as stated before. Please keep in mind that pressure and temperature play a big factor in...
    Post by: the_h2o_guru, Jun 19, 2007 in forum: Water Chemistry
  9. the_h2o_guru
    Post

    New RO/DI filters

    amcarrig is correct. The growth should die out on its own. Once the filters are changed, the enviroment that caused this growth will be gone. Without...
    Post by: the_h2o_guru, Jun 6, 2007 in forum: Filters, Pumps, etc..
  10. the_h2o_guru
    Post

    Ro/di ???

    JayLloyd73, A DI will take out any phosphates, dissolved metals or anything else like that out of your water. A RO unit alone cannot take out...
    Post by: the_h2o_guru, May 29, 2007 in forum: Filters, Pumps, etc..
  11. the_h2o_guru
    Post

    RO/DI questions

    Ok. Your membrane is rejecting only about 87.5% of the TDS. For a RO/DI unit, you would want your membrane to be rejecting between 95%-99% at least....
    Post by: the_h2o_guru, May 15, 2007 in forum: Filters, Pumps, etc..
  12. the_h2o_guru
    Post

    RO/DI questions

    Ok. What's the TDS of your tap? It sounds like you will need a new membrane soon. The membrane is supposed to be lessening the work of the DI. At...
    Post by: the_h2o_guru, May 14, 2007 in forum: Filters, Pumps, etc..
  13. the_h2o_guru
    Post

    RO/DI questions

    Most people like to change the DI when the TDS gets between 5-15 ppm. You said your RO TDS reading was 350? Did you mean before the membrane it was...
    Post by: the_h2o_guru, May 11, 2007 in forum: Filters, Pumps, etc..
  14. the_h2o_guru
    Post

    RODI Trouble

    Phone call time It is much simpler for us if you email me directly . I do not always get notice of messages . I sent you an email asking for your...
    Post by: the_h2o_guru, May 10, 2007 in forum: Filters, Pumps, etc..
  15. the_h2o_guru
    Post

    RODI Trouble

    Ok. The unit will produce waste water. All RO's produce waste water. Do you know what the water pressure of your house is? How cold is the water...
    Post by: the_h2o_guru, May 9, 2007 in forum: Filters, Pumps, etc..
  16. the_h2o_guru
    Post

    RODI Trouble

    Hello IBMGEEK, On the drain line, there's a flow restrictor with a black valve on it. Do you have that valve opened? If so, close it. That's a...
    Post by: the_h2o_guru, May 8, 2007 in forum: Filters, Pumps, etc..
  17. the_h2o_guru
    Post

    ro/di waste water

    Good answers about using waste water. Watering plants, using it for your washer are good uses for it. You can even use it for a bird bath if so...
    Post by: the_h2o_guru, Apr 25, 2007 in forum: Filters, Pumps, etc..
  18. the_h2o_guru
    Post

    FINALLY getting somewhere.

    Smilie wher the 8 should be I the original version the 9-18 ppm had a smilie in place of the 8
    Post by: the_h2o_guru, Mar 26, 2007 in forum: Algae
  19. the_h2o_guru
    Post

    FINALLY getting somewhere.

    sMALL MEMBRANES Hi , Yes the (12) gpd membrane is still available . We consider anything uder (50 ) gpd as very very old fashioned and nearly...
    Post by: the_h2o_guru, Mar 26, 2007 in forum: Algae
  20. the_h2o_guru
    Post

    Water for the small user

    Taking care of your Compact We ask you to change the pre-filters at least annually. Membranes normally last (3-5) years. Change the DI at...
    Post by: the_h2o_guru, Mar 26, 2007 in forum: Air, Water & Ice
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