looking for advise, my pH is 8.2 20 Gallon Tank

Discussion in 'pH' started by whiskers, Dec 4, 2009.

  1. whiskersNew MemberMember

    My 20g tank has a pH of 8.2.
    0 ammonia
    0 nitrite
    0-5 nitrate

    My tank just finished cycling and up until yesterday I had been doing 40% water changes about every other day. Could the water changes cause the high pH? I'm using the API master test kit.
  2. CHoffman

    CHoffmanFishlore VIPMember

    What is the PH of the water straight out of the tap?
  3. Meenu

    MeenuFishlore VIPMember

    Hi, whiskers. I noticed in your tank information that you are using Stress Zyme.

    Stress zyme doesn't contain nitrifying, aquatic bacteria. (BTW, Neither does Cycle). Only Tetra Safe Start has the correct bacteria.

    Stress Zyme and like products will only work if you add them for the life of the tank, usually weekly. The becteria they contain eats all the ammonia in your tank, and doesn't let the correct bacteria to grow. If I were you, I would stop using it. You may want to do a search in this forum's search engine to get more opinions on the product.

    I think maybe your tank isn't truly cycled if you are using that stuff, even though I hope it is. Maybe when you test your water in a week, and don't add any more, you can see if the cycle crashes.

    By the way, if you can get your hands on some, Tetra Safe Start is a great product. It's the only product that I know of that contains the correct bacteria. Type that into the search engine too. If you decide to use it, make sure you've researched how to use it properly. It's a bit finicky, and I can tell you from personal experience that it's not fun or cheap to have to use 4 bottles of something that needed only one bottle becuase you kept messing up.

    As far as the pH is concerned, I agree that the first thing to do is to check it out of the tap and then go from there. I know you didn't ask about Stress Zyme, but I just don't want to see you having to spend money every week on the stuff.

  4. AlyeskaGirlFishlore VIPMember

    Taking a reading of pH right out of the tap isn't the "true" reading though. The only way to know is getting a bucket of water, putting an airstone to agitate the surface for oxygen for 24 hrs, then test it. The link below explains it. It would be good to know what your kH reading is.


    Last edited: Dec 4, 2009
  5. CHoffman

    CHoffmanFishlore VIPMember

    Hmmm. Mine is the same straight out of the tap as it is in my tank...That is a great article though.
  6. AlyeskaGirlFishlore VIPMember

    It is a good article!!! Mine is the same too right out of the tap. Acidic. I have low kH though which sucks.
  7. CHoffman

    CHoffmanFishlore VIPMember

    I would love to have low..lol..I want some of the fish that need it. I have around 8ph.
  8. AlyeskaGirlFishlore VIPMember

    I'm not entirely sure what my pH readings is because it only goes to 6.0 on the card, which is the yellow..lol..I use the API liquid. It could be lower then 6.0. so I try to keep it up slightly with clam shells and baking soda sometimes being careful. I had issues trying to cycle my 55 gallon awhile back, then I raised the pH up slightly so I'd get out of the yellow zone and It made a difference. Sorry for hijacking the thread.
  9. Toddnbecka

    ToddnbeckaValued MemberMember

    My advice is to keep fish that like hard, alkaline water rather than trying to lower and maintain the pH. Your stocking options for a 20 are limited to smaller fish. Livebearers are usually a good bet, or inverts like mystery snails and/or cherry shrimp.
  10. Shawnie

    ShawnieFishlore LegendMember

    the ph will steady itself within a couple weeks after cycling...during the process, it can change constantly ...leave it be for at least a week without water changes(now that the cycle is done) and see where it settles down to
  11. OP

    whiskersNew MemberMember

    I stopped using the stress zyme about a week ago (when i was told it wasn't the right bacteria for cycling. I didn't test the tap water because i dont have a second air stone. rechecked levels today

    pH 8.2
    KH 8
    GH 7.5
  12. Shawnie

    ShawnieFishlore LegendMember

    a freshly cycled tank, or a currently cycling tank, will have a ph that changes often..if in a week or 2 you still have a high ph, then you can worry or leave it be..as long as its a steady ph, and you arent trying to breed something specifically that needs a lower ph, it will be ok.....but again give it a week and if it is still to high for you, put some peat moss in the filter , add some driftwood with tannis, or a dried almond leaf...
  13. OP

    whiskersNew MemberMember

    great! thank you so much. my tank would be doomed without this site!
  14. Cableguy9872New MemberMember

    Also consider using a mixture of RO water and Tap water(to dilute your PH of your tap water), this is what I am doing, just be sure to do small water changes with the mixutre not big ones for you will drop your PH in your tank to fast and cause stress on your fish!

    I have the same problem as you, my ph out of tap(even after 48 hours) is 8.2, I added peat which dropped it .2 in a week, then started doing small PWC(15% or so) with PURE RO water(right now, to help lower my PH) and have dropped it a total of another .2, so im down to 7.8. You could also consider using PURE RO water and using buffers added to the water to help keep a stable PH
  15. MaddieLynn

    MaddieLynnWell Known MemberMember

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