ph parameters

Discussion in 'Beginner Discussions' started by johannes rall, 15 Oct 2011.

  1. johannes rall

    johannes rall

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    what is the lowest ph in a fish only tank
     
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  3. Tobes

    Tobes Retired Moderator

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  4. johannes rall

    johannes rall Thread Starter

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    My ph is about 7 but the guy at the lfs said I must just leave it or do a water change but I did a 20% water change a week back.should I just leave it and see if it picks up or what?
     
  5. Tobes

    Tobes Retired Moderator

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    What did you use to measure the pH? It is advisable to always double check the pH with another method or test before trying to adjust it. Cause if the pH test kit or probe was inaccurate and you adjust, you might kill everything in your tank. Always double check ;)
     
  6. Alan

    Alan Admin MASA Contributor

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    7 is very low for a marine system, but please follow the advice offered by Tobes and get a second test done.
     
  7. johannes rall

    johannes rall Thread Starter

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    I dont have any test kids of my own yet so i take the water to the lfs once aweek to test.They used a probe.Should i wait a day or two and test again
     
  8. Tobes

    Tobes Retired Moderator

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    I wouldn't wait too long. Is the probe calibrated? Is it not too old? You need to test by someone else to make sure.
     
  9. Alan

    Alan Admin MASA Contributor

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    What is the DKH of the water? Low PH normally indicates a low DKH, not always but most of the time. If you have a low DKH reading in conjunction with low PH then i would say chances are good that your PH is on the low side. In a fish only system you may not have to pay too much attention to all the parameters, but it is a good idea to keep the PH in the region that the fish are used to, otherwise you could start stressing your fish.
     
  10. johannes rall

    johannes rall Thread Starter

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    sorry for sounding like a dummy but what is dkh?Not upto scratch on aqaurium terms
     
  11. Charl_Stanhope

    Charl_Stanhope

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    carbonate hardness. carbonate hardness(common name alkalinity) is a measurement of the capacity for water to neutralize an acid,known as the buffering capacity. in short,source of energy for nitrifying bacteria that eliminate ammonia and nitrite,carbonates are also used by plants for photosynthesis when c02 is absent. this is how I understand it.
     
  12. Big Blue

    Big Blue

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    Ok...DKH as I have it is the used when reading your KH which is your Carbon Hardness of the water. When testing most other parameters we us mg/l and Kh is measured as dkh. According to my understanding and I am pretty new at it. It measure the the rate at which the water can process oxgen, cardon dioxcide, and this all in turn would relate to how fast or slow toxin are releasing out the system....
    This to me a a very interesting question and I would love to here from the Older reefers whether my version is correct.
     
  13. johannes rall

    johannes rall Thread Starter

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    how dan I test for dkh.Is there thing I must test for if ph is low.test water yesterday every thing tested rite except for ph low
     
  14. Charl_Stanhope

    Charl_Stanhope

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    you get a kh test kit and a ph kit. Which test kits are you using?
     
  15. johannes rall

    johannes rall Thread Starter

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    I dont have testkits yet.I take the water once a week to the lfs
     
  16. Alan

    Alan Admin MASA Contributor

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    What tests are they doing? and What test kits are they using? If they doing a full range of tests and all are okay then PH will have to be in line, it cant be out.
     
  17. johannes rall

    johannes rall Thread Starter

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    I know they are using a probe to test the ph ,a refractometer for salinity and I saw they are useing the strips for the other tests
     
  18. johannes rall

    johannes rall Thread Starter

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    Ok thanks to carter who tested my water ph again it tested ok.It was in the 8 range like it should be.He use the salifert ph test kit so I dont know.Fish and shrimp still look ok
     
  19. seank

    seank

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    Johannes, you need to invest in a test kit if you can. It is worth it, even I know something about science since I got my 1st test kit some years ago. It is more valuable to newbies than coral or fish ;)
     
  20. johannes rall

    johannes rall Thread Starter

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    yes I think that will be my next buy.
     
  21. Charl_Stanhope

    Charl_Stanhope

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    I totally agree. I had test kits before corals. Its made a huge difference to coral growth dosing what I know is out of range. Ill definitely make that my next buy if I were you. Itll will benefit you in the long run and test kits are something you dont have to buy every month. They last quite a while.buy a decent test kit as well.not the cheaper ones on the market. They not accurate.
     
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