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Magnesium and Strontium

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WaterDogs

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I use Instant Ocean salt and change 10 gallons a week out of a 75 gallon reef tank that is mostly clams and SPS. My stocking level is med-high. My question is do I need to test for Magnesium and Strontium and dose if needed or are my water changes more than enough! Thanks for any info!!

Dwaine :)
 

DonW

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WaterDogs said:
Isn't the Mg range something like 1200-1350? Doesn't IO fall into that range?

Dwaine

Yes, you just want to test to make sure your WC is keeping up with it. Just depends on your system demand.

Don
 

mojoreef

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Dwaine Mag doesnt get used up as much as cal or alk,but it still does get used and pairs up with everything. I think its a good idea to check it once and awhile. I fell a sleep on it for about a year and it began depressing my PH it was so low. It took forever to get it back up to a normal level, a real bear. I went through gallons of Mag. chloride and epson salts. Checking it every month or so cant hurt.

Mike
 

WaterDogs

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Thanks both of you for the info. I bought a Mg kit and IO mixed up with RO/DI comes out to 1020-1040 at a SG of 1.023. My tank is at 1.025 and measures at 1440 but I just switched from Oceanic salt a few weeks ago to IO is why it is so high. I will test weekly till I find out how much is being consumed. The IO does look about 200 points low from a target value of 1250.

Dwaine
 

Boomer

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mattseattle

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WaterDogs said:
Thanks both of you for the info. I bought a Mg kit and IO mixed up with RO/DI comes out to 1020-1040 at a SG of 1.023. My tank is at 1.025 and measures at 1440 but I just switched from Oceanic salt a few weeks ago to IO is why it is so high. I will test weekly till I find out how much is being consumed. The IO does look about 200 points low from a target value of 1250.

Dwaine
I mixed up IO the other day to 1.025 and Mg came out at 1200. Still a tad low but not that bad.
 

WaterDogs

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Thanks Boomer for all the reading! It very educational! Now I have one more thing to keep track of it my tank.

Any thoughts on the Strontium concentrations or do most salts contain an adequate amount not worth measuring or dosing?

Dwaine
 

Boomer

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Water

That last link I posted above gives Sr levels for a number of salts, but the article is rather old but they are about the same.


The Composition Of Several Synthetic Seawater Mixes
http://web.archive.org/web/20030608...om/fish2/aqfm/1999/mar/features/1/default.asp

You must like to read :lol:



Strontium and the Reef Aquarium
http://www.advancedaquarist.com/issues/nov2003/chem.htm


Magnesium and Strontium in Limewater
http://www.advancedaquarist.com/issues/dec2003/chem.htm

Final note, I wouln't be adding Sr unless you have a test kit, same thing for borate, especailly borate.
 
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