Jump to content

Need help urgently: Calcium and Alk levels dropping in SPS tank!


Recommended Posts

  • SRC Member

Hi Everyone,

I was a member under a different nickname some years back and now have returned to the hobby!

There is a problem with my 100g SPS tank. Calcium levels can drop from 420-350mg/ml, and alkalinity level drops from 4.5-3.5meq/l in one day. This is worrying as I do not know the root cause and if I keep topping up the calcium and alkalinity levels so rapidly, it will kill my corals and my wallet.

Some background info on the tank

3 acros around 4 inches high and 1 LPS duncan coral (quite big around 30 heads)

Some hermit crabs, sea squirts and feather duster worms

pH 8.3-8.4

Salinity 1.0265

temp 26.2-26.7

Nitrates 0

Phosphates <0.08 (my test kit shows very little deviation below this level)

magnesium 1440 (alittle high I know)

additives (ultra min fine food for sponges, phytogreen 10-15micrometer phytoplankton 1ml/day, polyplab polyp booster 1ml/day, ultra minS nutrition concentrate 1ml/day)

I usually add the calcium and carbonate powder to the sump. Measurements in the main tank and sump have no deviation.

Could anyone please advise?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share



  • Join us on the largest Reefing community in Asia!

    Sign up and share your reefing journey with us, make friends and get helps from the community .

     

  • Topics

  • Latest Update

    1. 2

      WTS 6" Foxface

    2. 1

      Storeroom Clearance

    3. 0

      加拿大保录取_SFU毕业证成绩单——Q微信751558146西蒙菲莎大学学位证_成绩单_办理SFU文凭学历认证Simon Fraser University

    4. 0

      美国学位证_Brandeis毕业证成绩单+Q微信751558146布兰迪斯大学学位证_成绩单_办理Brandeis文凭学历认证Brandeis University

×
×
  • Create New...