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magnesium

Printed From: Utah Reefs
Category: Specialized Discussion
Forum Name: Reef Chemistry
Forum Description: A place to discuss reef chemistry.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=74715
Printed Date: April 29 2024 at 6:50am
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Topic: magnesium
Posted By: phys
Subject: magnesium
Date Posted: February 05 2015 at 5:25pm
has anybody ever see which negative effects having an imbalance between mag sulfate and mag chloride in a tank? Closed polyps, slow growth, etc?



Replies:
Posted By: Mark Peterson
Date Posted: February 06 2015 at 10:43am
With the myriad of more likely causes for closed polyps and slowed growth, it would be extremely hard to pinpoint the exclusive use of Epsom Salt as the cause. I have never seen it but I believe it can take a long time for that to become a problem, especially if regular water changes are done. It's my opinion that the Sulfur process/cycle in a system with appropriate biofiltration can handle quite a lot of Sulfur.

If coral in your tank is having the aforementioned problems, maybe an investigative discussion could help, even for an excellent hobbyist like yourself. A pic and description is a good place to start.

Aloha Hug


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Posted By: phys
Date Posted: February 06 2015 at 8:37pm
Yea, im down to only a few options... No bugs, parameters are sound, lighting may be an issue, flow hasnt changed, no nitrates, no phosphates, water changes often as i can.... Ill keep tryin stuff and waiting lol


Posted By: ReefdUp
Date Posted: February 06 2015 at 9:19pm
Remind me again how big your system is? How much is the most you've dosed of Epsom salts at once? How long have you been dosing just mag sulfate? This system hasn't been up too long, right?

The amount of magnesium in magnesium sulfate is pretty small, with the sulfur part quite large. However, NSW level of sulfur is quite high, so it's hard to overdose. If you suddenly dosed a massive amount of mag sulfate, then yes, I'd expect to see closed polyps. My husband accidentally dosed an entire gallon of magnesium sulfate into my 40g tank about 8 years ago (it wasn't labelled, and he thought it was top-off water). I had closed polyps, some recession, and I think I lost a little bit (can't remember so long ago!) But, it wasn't massive, especially when you consider a gallon of mag sulfate in a 40g tank.

Bottom line...it's possible, but rare. The math/chemistry makes it pretty hard to believe except in extreme cases.

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www.reefdup.com
Diving since 2009, reefkeeping since 2007, & fishkeeping since 1987
200g, 75g, & 15g Systems
PADI Advanced Open Water


Posted By: phys
Date Posted: February 07 2015 at 12:48am
yea, it was only a couple cups into 150g. Probably not a huge amount considering the tank size.
 
have you noticed any other random reasons for lack of polyp extension?


Posted By: jbuck13
Date Posted: February 07 2015 at 6:57am
The only other random thing, that pops into my head is a rogue dwarf angel, have you   
recently added someone who might be nipping when you aren't looking, or one that may have just found the delicious polyps? I've just experienced this for myself with a flame that decided he really enjoys sps, and my sps all looked receded I thought I was burning them because I had just increased the intensity on my leds, as I was staring at my box, I watched that cute little bugger as he made he way around, just a nipping just about every freaking coral in there, just a thought       ?


Posted By: ReefdUp
Date Posted: February 07 2015 at 7:05am
What type of polyps? Zoas? Other softies? LPS? SPS? Only in one area of the tank or all throughout? Any other symptoms? Are you running carbon?

-------------
www.reefdup.com
Diving since 2009, reefkeeping since 2007, & fishkeeping since 1987
200g, 75g, & 15g Systems
PADI Advanced Open Water


Posted By: Mark Peterson
Date Posted: February 07 2015 at 10:06am
I would ask the same questions as above two posts.
Also, I've noticed that hobbyists do have good inklings of trouble. Above you said "lighting may be an issue". Please explain why you are wondering that.

Aloha,
Mark  Hug


-------------
Reefkeeping Tips, & quick, easy setup tricks:
www.utahreefs.com/forum/forum_posts.asp?TID=9244
Pay it forward - become a paid WMAS member


Posted By: phys
Date Posted: February 07 2015 at 12:52pm
jbuck, you raise a good question... I've noticed my rabbitfish munchin zoas and around the same time is when they started receding..... I think I may have found my culprit.


Posted By: Pete Moss
Date Posted: February 07 2015 at 2:46pm
Originally posted by ReefdUp ReefdUp wrote:

My husband accidentally dosed an entire gallon of magnesium sulfate into my 40g tank about 8 years ago (it wasn't labelled, and he thought it was top-off water.


That's one way to test the resilience of the vows of matramony.

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125g 90g 2x33g 34g
What stores do I recommend?
Up North: Bill ( Saltwater Paradise 801-317-8115 )
Down South: Jerry ( Reef On 801-563-0600 )

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