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 03-18-2010, 10:47 PM   #1
AA Team Emeritus
 
Tank2379's Avatar
 
Join Date: Jul 2008
Location: Chicago,IL
Posts: 2,890
Send a message via MSN to Tank2379 Send a message via Yahoo to Tank2379
Post Magnesium up and down?

Can Magnesium level rise and fall? I been doing 2 part and notice my mag was high 1500. Two days ago I tested it was at 1440 then the day before that it was at 1380? Any idea why it's going up instead of down? I am dosing Alk and Cal only....

Let me know

Thanks
Frankie
__________________

Tank2379 is offline   Reply With Quote
Old 03-19-2010, 12:25 PM   #2
SW REEF 18+ YEARS
Community Admin
 
melosu58's Avatar



Tank of the Month Award
 
Join Date: Oct 2004
Location: Virginia
Posts: 38,249
I`ll have to wait for sure from the Guru Larry (CCCapt) but I think that as your calcium goes up so does your magnesium. There`s somekind of ratio thing going on. I think.
__________________

__________________

SITE ADMINISTRATOR

You can view many of my fish and corals in my photo albums in my profile.

View my tank


AA Community Rules|AA TOS

Forums 101 - posting, accounts, basics
melosu58 is offline   Reply With Quote
Old 03-19-2010, 01:09 PM   #3
SW 20 & Over Club
 
ccCapt's Avatar


 
Join Date: Mar 2004
Location: Northeast PA
Posts: 5,362
Send a message via ICQ to ccCapt
I would have to say it's a testing error. As calcification occurs (corals growing hard skeletons, coralline algae growing ,etc) mag is used in a ratio of aprox 2 ppm mag to 18 ppm calcium and 2.8 dKH alk. It can't rise on it's own without it being dosed.
So if it truly was 1550 went down to 1380 (170 ppm), you calcium would have dropped 1530 ppm(9x more ca is used than mag)...which is pretty much impossible....especially when the normal range for ca is 380-450 ppm.
__________________
/Larry
125g reef
See My Tank Info
Check out The build project
ccCapt is offline   Reply With Quote
Old 03-19-2010, 01:51 PM   #4
SW REEF 18+ YEARS
Community Admin
 
melosu58's Avatar



Tank of the Month Award
 
Join Date: Oct 2004
Location: Virginia
Posts: 38,249
Thanks for the info Larry.
__________________

SITE ADMINISTRATOR

You can view many of my fish and corals in my photo albums in my profile.

View my tank


AA Community Rules|AA TOS

Forums 101 - posting, accounts, basics
melosu58 is offline   Reply With Quote
Old 03-19-2010, 05:12 PM   #5
Sliced Bread
 
neilanh's Avatar


 
Join Date: Dec 2006
Location: Northern Virginia
Posts: 8,482
Man I'm glad Larry hangs around here...

Those Mag tests are like doing a science experiment. At least the Salifert one is. 4 drops of this, a scoop of this dry stuff, more drops of that. haha. I've screwed it up several times for sure.
__________________
~Neilan
In the DC Metro Area? Check out GWAPA and WAMAS
neilanh is offline   Reply With Quote
Old 03-20-2010, 11:20 AM   #6
AA Team Emeritus
 
Tank2379's Avatar
 
Join Date: Jul 2008
Location: Chicago,IL
Posts: 2,890
Send a message via MSN to Tank2379 Send a message via Yahoo to Tank2379
Just wondering now if my Test kit went bad. I just bought it and I get a different mag reading everytime. Thanks Larry you been a big help....
__________________

Tank2379 is offline   Reply With Quote
Reply

Tags
magnesium

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
Magnesium Question baldyguy Freshwater & Brackish - General Discussion 2 01-03-2010 02:22 PM
low magnesium brianf40us Saltwater & Reef - Getting Started 7 12-16-2008 01:05 PM
Magnesium and Calcium brianf40us Saltwater & Reef - Getting Started 4 11-30-2008 12:30 AM
low magnesium sooju Saltwater Reef Aquaria 26 10-28-2008 03:36 PM
Magnesium Level EMS503 Saltwater Reef Aquaria 3 05-19-2003 08:59 AM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 09:26 AM.


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