High alk without dosing

Discussion in 'Water Parameters and Additives' started by superfrog, 19 Aug 2013.

  1. superfrog

    superfrog

    Joined:
    22 May 2010
    Posts:
    270
    Likes Received:
    32
    Location:
    Johannesburg, West
    Im beginning to worry about my alk levels. Mostly using a seachem test kit to check. Have used others to confirm with similar results.

    Tank started mid May with lower alk levels at 3 meq/l. This has been slowly rising and my last test yesterday indicates alk sitting at 5 meq/l. I dont dose anything at all.

    Do 50% weekly changes with aquavitro salinity mix. Parameters:

    Sg always steady at 1.025.
    Temp: 25
    Amm: 0
    Nitrite: 0
    Nitrate: 0.1
    Ph: low-8 high-8.1
    I dont have a calcium test.
    Lighting schedule is 8 hours.

    Is this a problem? If so what could be causing it and how can it be fixed?
     
  2. AdS Guest




    to hide all adverts.
  3. carlosdeandrade

    carlosdeandrade

    Joined:
    24 Dec 2010
    Posts:
    8,230
    Likes Received:
    228
    Location:
    North Riding, Jozi
  4. superfrog

    superfrog Thread Starter

    Joined:
    22 May 2010
    Posts:
    270
    Likes Received:
    32
    Location:
    Johannesburg, West
    alk of fresh mixed salt water is 4 meq/l :whistling:

    and yes 50 is high. planned to keep up with 50 for first 3 months then slowly drop down to 10%. Have had good results in the past with this sort of approach on small tanks
     
    Last edited: 19 Aug 2013
  5. SeanR

    SeanR

    Joined:
    7 Jul 2013
    Posts:
    282
    Likes Received:
    2
    Location:
    Parklands, Cape Town
    tagging along
     
  6. dallasg

    dallasg Moderator MASA Contributor

    Joined:
    14 Dec 2008
    Posts:
    16,771
    Likes Received:
    582
    Location:
    Sandton
    to go deeper would need Ca and Mg readings
     
  7. carlosdeandrade

    carlosdeandrade

    Joined:
    24 Dec 2010
    Posts:
    8,230
    Likes Received:
    228
    Location:
    North Riding, Jozi
    Also what corals do you have in your tank. If there is nothing to utilize the Alk, they will naturally stay high and keep on climbing as you do such large water changes. You do not need to do such large water changes in a new tank.
     
  8. mariusmeyer

    mariusmeyer

    Joined:
    7 Jul 2009
    Posts:
    3,054
    Likes Received:
    210
    Location:
    Jukskei Park, JHB
    So you are not dosing anything?
     
  9. superfrog

    superfrog Thread Starter

    Joined:
    22 May 2010
    Posts:
    270
    Likes Received:
    32
    Location:
    Johannesburg, West
    Not a lot in the tank at the moment. lps hammer coral (4 heads, 3 of them splitting), one tiny piece of test sps acropora (+- 2 cm), small blasto colony (4 heads, 2 new babies popping out, +- 4 cm in total), other softies (some zoas, mushrooms, gsp, toadstool leather - these shouldn't really affect calcium/alk levels?)

    im experimenting with biopellets so filtration is a bit different. No GFO, etc. no carbon. no purigen. no floss n stuff.
    Running a Bubble Magus mini60 reactor with biopellets and the Skimz HS1 skimmer that comes with the ibox.


    What you saying about the lack of uptake and large changes makes sense. perhaps I should starve off the water changes a bit? The pellets seem to keep the nitrates in check so I really don't need the big changes (old habit I guess).

    yep, not dosing anything unless you count special blend and aquavitro fuel? I feed the tank very heavily. I don't dose any direct chemistry related products.


    can see the corals in this pic. The goiniopora was removed as I don't think it was feeding and was likely not going to survive long. traded back to lfs.
    [​IMG]

    edit: just realised this pic was taken before the sps frag was added so you wont see that there.
     
    Last edited: 19 Aug 2013
  10. dallasg

    dallasg Moderator MASA Contributor

    Joined:
    14 Dec 2008
    Posts:
    16,771
    Likes Received:
    582
    Location:
    Sandton
    will still need to see Ca and Mg values as Alk, Ca and Mg are all related

    tank is looking good
     
  11. superfrog

    superfrog Thread Starter

    Joined:
    22 May 2010
    Posts:
    270
    Likes Received:
    32
    Location:
    Johannesburg, West

    Thanks, actually made a few hardware changes lately so it looks a bit different now.

    just need to work on getting the kits. which would you recommend?
     
  12. dallasg

    dallasg Moderator MASA Contributor

    Joined:
    14 Dec 2008
    Posts:
    16,771
    Likes Received:
    582
    Location:
    Sandton
    i use salifert kits, best value for money
     
Recent Posts

Loading...
Similar Threads - High without dosing Forum Date
Dallas' Mile High TL-550 Nano Tanks 22 Apr 2016
[wtd] Fish tank wanted, 3foot that's around 600mm high Wanted 18 Mar 2016
High Calcium... what could i do to fix? Water Parameters and Additives 8 Feb 2016
Urgent help needed Nitrates very high!! Help Urgent Help Needed 22 Jan 2016
Municipal power to high Power cuts 2 Oct 2015
Get to know some ZEOVIT Products: Amino acid fish is a highly concentrated immun... JungleAquatics.NET BLOG 15 Jun 2015
Water Temp too high Water Parameters and Additives 3 Nov 2014