Close
Results 1 to 9 of 9

Thread: Calcium and alk

  1. #1
    Premium member Mpdan's Avatar
    Join Date
    Jan 2017
    Location
    Des Plaines
    Posts
    107
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Calcium and alk

    Tested water yesterday Calcium 400 and dkh 4. I had some salt mixed up and tested that Calcium 420 dkh 7. I did a water change this morning, 5 gallons weekly 28 gallon tank, now readings are Calcium 400 dkh 5. Should I start dosing? I have been seeing decent growth in the tank, but the dkh is scaring me a bit.

    Sent from my Pixel 2 using Tapatalk

  2. #2
    Premium member
    Join Date
    Jan 2012
    Location
    Joliet IL
    Posts
    242
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    What are you using to test? Is the test kit good? How do your coral look?

  3. #3
    Premium member ultimatemj's Avatar
    Join Date
    Feb 2014
    Location
    Riverside
    Posts
    938
    Post Thanks / Like
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    I'd encourage you to investigate kalkwasser (I use it via ATO). It's the easiest way to dose, and unless you have a larger tank, or significant amounts of SPS growth, it is typically "enough".

  4. Thanks Mpdan thanked for this post
  5. #4
    Premium member Mpdan's Avatar
    Join Date
    Jan 2017
    Location
    Des Plaines
    Posts
    107
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by JMalone81 View Post
    What are you using to test? Is the test kit good? How do your coral look?
    API test kit. I tested it 3x same results. Had it tested at lfs yesterday and he said calcium was 380 dkh was 4-5. Corals are looking good

    Sent from my Pixel 2 using Tapatalk

  6. #5
    Senior Member Funlad3's Avatar
    Join Date
    Sep 2011
    Location
    Arlington Heights
    Posts
    3,539
    Post Thanks / Like
    Mentioned
    11 Post(s)
    Tagged
    0 Thread(s)
    What kit did the store test your water with? There's no way your dkh was at 4; your rock and sand would be dissolving to try to balance out the carbonate buffer system in your tank.
    - Ben

  7. #6
    Junior Member
    Join Date
    Jan 2013
    Location
    Bloomingdale
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I would consider getting a different test kit just to be safe. Maybe spend a few more bucks and get a RedSea kit.

  8. #7
    Premium member Mpdan's Avatar
    Join Date
    Jan 2017
    Location
    Des Plaines
    Posts
    107
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I don't know what kit they used. I guess I will be picking up another kit today.

    Sent from my Pixel 2 using Tapatalk

  9. Likes Funlad3 liked this post
  10. #8
    Premium member goatous's Avatar
    Join Date
    Apr 2016
    Location
    Huntley, IL
    Posts
    224
    Post Thanks / Like
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    If you decide to buy another tester, I've had good luck with my Hanna alk checker, very consistent and super quick.
    Matches nicely with Red Sea Pro but a fraction of the time to test.
    I'm also not seeing variations between lots of the reagent, which is indication to me of quality manufacturing of their chemicals.
    Good luck!

  11. Thanks Mpdan thanked for this post
  12. #9
    Premium member
    Join Date
    Jan 2012
    Location
    Joliet IL
    Posts
    242
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I would also go with Hanna alk too. API are not the best test kits. I doubt your alk is 4 and you have living coral.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •