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Thread: Ottawa water

  1. #1
    Senior Member geekreef_05's Avatar
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    May 2005

    Ottawa water

    Hi, Im running an RO/DI filter at home for my water, but I totally forgot to check the pH levels. I even did a water change on my nano and filled my new 60 gallon already. is pH in Ottawa water? With RO/DI filteration should I be concerned?

    thanks guys,
    happy reefin'

  2. #2
    Senior Member gator's Avatar
    Join Date
    Apr 2005
    In my experience, running tapwater through an RO unit lowers ph to about 6, but if you mix salt it will raise the ph back to suitable levels. Whenever I use ro to top-off my tanks, which is about once a week, I use the two-part additive system from B-Ionic to restore alk and calcium. When I can afford it, i'll invest in a calcium reactor. I also heard that you can trickle the ro water through aragonite to raise it's ph and calcium levels, but i've never tried it.

  3. #3
    Senior Member geekreef_05's Avatar
    Join Date
    May 2005
    My LR is cycling in my 60 gallon with that RO/DI water. Is this ok? Should I worry about pH problems effecting the cycle or LR? I hate to say it *choke* ..will it kill my LR?


  4. #4
    Senior Member boyohboy's Avatar
    Join Date
    Mar 2005
    RO/DI water usually has very low pH, becuase there is almost nothing, no buffering, in the R/O. The moment you add even abit of salt mix into it, the pH will go back to what the saltmix gives you, so there's nothing to worry about IMO.

    In fact, just for fun, you can try measure the pH of your RO and your tap water... then mix, say, a 10 to 1 volumes of RO to tap water and measure the pH of the mix. Even tho you mix in 10 times more RO water, I can almost bet that the pH of the 'mix' will be the same as ur tap water.
    Hardwares: 50G reef tank, 30G sump & ~55lb Indo/Fiji LR. Finnex 36"x4 T5 lights, Coralife Superskimmer 220g, Mag9.5 return and SEIO820+MJ600 PH.
    Corals: zoosss, mushrooms, hammer, torch, fogsprawn, blasto, crocea clam, RBTA
    Fish: Percular clown PJ cardinal, royal gramma, yellow watchman goby, 3x chromis.

  5. #5
    Moderator cres's Avatar
    Join Date
    Jul 2004
    The pH has to be pretty far off to "kill" live rock. Typically, the live stuff is hard to kill. Coral on the other hand will suffer. Fish too.

    But, don't worry much about the pH of pure water. Just make sure you check after salt is added.
    Sarchasm: The gulf between the author of sarcastic wit and the person who doesn't get it.

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