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PH question?

Discussion in 'Water Chemistry' started by Cookie_apisto, Mar 9, 2017.

  1. Cookie_apisto

    Cookie_apisto Member

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    My LFS told me to lower the PH and the hardness for my apisto macmasteri so they can have better color and also for them to breed if I want. Should I do that? I got a RO unit which I can softer the water slowly but I want to hear some advise from the expert like you guys first! My tank ph is 7.8 and kh 5 from my tap now.
  2. Mike Wise

    Mike Wise Moderator Staff Member 5 Year Member

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    Personally I think your dKH is fine for macs, which are more adaptable to water hardness than many apistos. If you can lower the pH to just below neutral it would be much better.
  3. Cookie_apisto

    Cookie_apisto Member

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    Can they adapt kh below 5? If I lower the ph below nrutral then kh gonna drop too
  4. Mike Wise

    Mike Wise Moderator Staff Member 5 Year Member

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    5° dKH is ~85 ppm TDS which isn't really that hard. You should be able to lower the pH with peat. Yes, it probably will lower the hardness somewhat, but for macs it isn't that important.
  5. Cookie_apisto

    Cookie_apisto Member

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    The ph of just RO water is 6 so I going mix ro with tap and then soak the wster with almond leaves in the bucket so i can control the ph easier and tint the water a bit.
  6. dw1305

    dw1305 Well-Known Member 5 Year Member

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    Hi all,
    A lot of the water in S. America doesn't have any carbonate buffering (dKH). Not every-one will agree but I don't worry too much about pH in soft water planted tanks, it can never be stable.

    cheers Darrel
  7. Cookie_apisto

    Cookie_apisto Member

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    like 0 dkh?
  8. dw1305

    dw1305 Well-Known Member 5 Year Member

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    Hi all,
    Yes there isn't any carbonate buffering, and hardly any ions of any description.

    If you find conductivity readings from the Rio Negro etc they are less than 20 microS.

    cheers Darrel
    ButtNekkid likes this.
  9. Cookie_apisto

    Cookie_apisto Member

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    Wow thats very low in the hardness.
  10. Cookie_apisto

    Cookie_apisto Member

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    By the way I just put a large piece of spider driftwood in my tank but before that I didnt boil or cure it in a bucket with wAter so it started to growing some white stuff on it. I know thats going to happen but one of my sterbai cory is eating it so I dont know if that ssfe for them to eat.
  11. Mike Wise

    Mike Wise Moderator Staff Member 5 Year Member

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    It's eating a fungus growing on the wood. It's sort of like people who eat fungi: mushrooms good; toadstools bad. Personally I've never had a fish die from grazing on fungus on wood - that I know was the cause anyway.
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  12. dw1305

    dw1305 Well-Known Member 5 Year Member

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  13. ButtNekkid

    ButtNekkid Member

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  14. Cookie_apisto

    Cookie_apisto Member

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    Just took the wood out for cleaning but the white started to come back again. I guess I have clean it again lster lol
  15. Cookie_apisto

    Cookie_apisto Member

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  16. Cookie_apisto

    Cookie_apisto Member

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    By the way is black lava rocks effect ph and hardness?
  17. Mike Wise

    Mike Wise Moderator Staff Member 5 Year Member

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    Black volcanic rocks are usually basaltic rocks. These don't normally have carbonates in them, so should be OK. Just test it by putting it in water (preferably very soft) for a week and see if it changes the pH.
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  18. gerald

    gerald Well-Known Member 5 Year Member

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    Also measure the conductivity - i think that will be a better indicator of ions dissolving out of the rock. pH measurement might change due to other factors that have nothing to do with the rock.
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  19. Cookie_apisto

    Cookie_apisto Member

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    Yes I am going to messure the ph after I dump the rock into ro water for a week but I am not sure if I can test the conductivity. I will try my best.
  20. Cookie_apisto

    Cookie_apisto Member

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    It is possible to keep anubias (only anubias) in a light tinted black water tank?

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