Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Reef Aquaria
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 04-28-2016, 11:31 PM   #1
Aquarium Advice Activist
 
ekean45's Avatar
 
Join Date: Nov 2011
Location: Marietta, GA
Posts: 153
Trouble Raising Magnesium and Calcium

Over the past several months, I have been trying to raise magnesium and calcium levels with supplements and it does not seem to be doing very much.

65 gallon reef with a 10 gallon refugium (just added fuge a few weeks ago). I dose vodka - been doing that for about 3 years - tank has been running a bit over 4 years.

I had been using filtered tap water until about end of January this year. Since beginning of February, I have been only using RODI - did quite a few 30-40% water changes for first few weeks and now do 10% changes religiously every 4-5 days. Coral looks better than ever and fish look great. Have an HOB Octopus skimmer.

Nitrite, nitrate, ammonia and phosphate are 0.

Any suggestions? Since coral seems to look good and appears to be growing / splitting, do I need to worry about the Mag/Calc levels?

Here is a chart of the log of the metrics.
__________________

__________________
ekean45 is offline   Reply With Quote
Old 04-29-2016, 12:38 AM   #2
Aquarium Advice Addict
 
Gregcoyote's Avatar



Tank of the Month Award
 
Join Date: Feb 2011
Location: Columbia, Missouri
Posts: 8,322
Traditional wisdom would warn you that the calcium and Mg levels are too low. Alk looks about right. I mix my own supplements and I can tell you it takes a surprising amount of Mg to raise levels to "normal." Same with calcium. They balance each other and low levels effects some corals and others don't seem to care. My caps would all suffer if I got the values as low as yours. Look at the BSR videos on the topic. They are excellent and show you the best and cheapest way forwards.


Sent from my iPhone using Aquarium Advice
__________________

__________________
Gregcoyote is offline   Reply With Quote
Old 04-29-2016, 07:26 AM   #3
Aquarium Advice FINatic
 
Mr tap water's Avatar

POTM Champion
Tank of the Month Award
 
Join Date: Aug 2013
Location: middlesex uk
Posts: 544
Hi there
Here's a couple of suggestions you could try raise your Sg Up to 1.026 this will help elevate levels. Secondly when you first buy your salt do you give it a good mix up as sometimes some of the major elements can sometimes sit at the bottom. thirdly it can sometimes depends on what brand of salt you use some have higher mag and calcium levels then others it might be worth having a look at other brands i'll Salt with higher levels.
If none of the above works you're only real other solution is to dose manually with some concentrated magnesium, and same goes for the calcium sometimes calcium levels can drop quicker and usually to do with how many Stony corals you have. I hope you get it sorted soon good luck.


Sent from my iPhone using Tapatalk
__________________
Mr tap water is offline   Reply With Quote
Old 04-29-2016, 09:10 AM   #4
Aquarium Advice Activist
 
ekean45's Avatar
 
Join Date: Nov 2011
Location: Marietta, GA
Posts: 153
I'll watch the video's - thanks for the advice

I do mix the salt. I make my own RODI and have a mixing station. I'll look into raising the salt first since that should be a fairly easy fix.
__________________
ekean45 is offline   Reply With Quote
Old 04-29-2016, 04:35 PM   #5
Aquarium Advice Addict
 
Gregcoyote's Avatar



Tank of the Month Award
 
Join Date: Feb 2011
Location: Columbia, Missouri
Posts: 8,322
Trouble Raising Magnesium and Calcium

If you have a lot of stoney corals, you will need a lot of water exchanges to make up the difference. I suggest just testing then adding slowly the Mg and Cal while watching the Alk closely. Once you establish a daily dosing regime, then you could add that much to your dry salt mix. But I still prefer dosing liquids using a dosing pump. Never add anything until you are sure you have a accurate test showing what's lacking.


Sent from my iPhone using Aquarium Advice
__________________
Gregcoyote is offline   Reply With Quote
Old 05-02-2016, 02:07 AM   #6
Aquarium Advice Addict
 
jeffaquarius's Avatar
 
Join Date: Jan 2013
Location: Los Angeles, California
Posts: 1,933
The alk on your last reading is ok but you need to raise your mag first to at least 1300 before raising your calcium. I notice your alk fluctuates a lot. When it drops to 7 the balancing of the other would be difficult. In other words, maintain 9 dkh before dosing mag and calcium. Raising salinity would also help raising the values of trace elements and minimize dosing.
__________________

__________________
"Nothing great in the world has ever been accomplished without passion". George Wilhelm Friedrich Hegel

http://www.youtube.com/watch?v=90w86...A434PW3gEa1-QA
jeffaquarius is offline   Reply With Quote
Reply

Tags
calcium, magnesium, trouble

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
EI, why no magnesium? PPS pro, why magnesium? JackBlasto Freshwater & Brackish - Planted Tanks 8 09-10-2013 10:10 PM
Can raising magnesium bleach out coral? Animal-Chin Saltwater Reef Aquaria 6 07-17-2013 10:26 PM
raising magnesium put corals into shock Dingodan Saltwater & Reef - Sick Fish or Coral 3 10-20-2012 04:02 PM
trouble raising calcium Dr.Nate Saltwater Reef Aquaria 8 05-31-2005 05:31 PM
Calcium and magnesium options? TIA roadster3043 Freshwater & Brackish - General Discussion 12 12-17-2003 10:55 AM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 07:21 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.