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Thread: DOS Vs PMUP as ATO

  1. #1
    Regular Vistor
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    May 2017
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    Melbourne, Victoria
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    DOS Vs PMUP as ATO

    Hi All,

    I have distinctive setup with a remote ATO, OSW and FSW in the garage that is approximately 25 meters (82 feet) aways from the display tank running via John Guest 1/4 line on the same level (ceiling height is 2.5 meters) . I've successfully setup the DOS as an AWC however given the release of the new PMUP would this be an ideal candidate for a remote ATO pump or it would be best to run another DOS for this purpose. I am not worried about its vertical ability to pump water but rather its horizontal ability.

    Replacing a PMUP would be cheaper I suppose but what are your thoughts.

  2. #2
    Regular Vistor
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    Apr 2017
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    California
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    25
    The PMUP is rated for 14ft of head pressure. I think your setup is approx 16ft of head pressure. Im not convinced the additional 2 ft of head pressure are a deal breaker. I think its more likely to have a decrease in the flow rate. It might be worth the gamble on the PMUP over the DOS to save some money

  3. #3
    Regular Vistor
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    May 2017
    Location
    Melbourne, Victoria
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    19
    Hi Jonleon89,

    I've run the PMUP as an ATO (ATK pack) from the same distance - problem is that there is still risk of siphoning of water as I did not install siphon break at the time as my apex was going crazy that my salinity was dropping. Given this I think the DOS is the way to go as there has not been any incident of siphoning and is the most accurate way to do a water change.

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