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View Full Version : Salt with LOW Mg???

doch
09-26-2011, 08:51 AM
Long story short (see my other posts) I need a salt with low Mg... any recomendations?
whatcaneyedo
09-26-2011, 01:08 PM
Ca, Alk and Mg levels for 20 different brands are listed here:

http://reefcentral.com/forums/showthread.php?t=1714505
ponokareefer
09-26-2011, 01:23 PM
Ca, Alk and Mg levels for 20 different brands are listed here:

http://reefcentral.com/forums/showthread.php?t=1714505

My Instant Ocean pales have never come close to those Mg levels, so I'd take that chart with a grain of salt. :wink:
The Codfather
09-26-2011, 02:38 PM
Just about every pail I have used of instant ocean has those numbers. It might not be the best salt around, but I have found them to be consistant the last couple years.
lastlight
09-26-2011, 03:03 PM
reef crystals is always low. high for the other two.
Bblinks
09-26-2011, 03:27 PM
My Instant Ocean pales have never come close to those Mg levels, so I'd take that chart with a grain of salt. :wink:

My mag is just a bit lower than whats listed on the chart, but all the other number are bang on when salinity is at 1.026 or 35ppm. Make sure you are using a refractor for checking the salinity level or it might not be accurate and of course it will vary according to salinity level.
mark
09-26-2011, 09:38 PM
Ca, Alk and Mg levels for 20 different brands are listed here:

http://reefcentral.com/forums/showthread.php?t=1714505


sort of interesting seeing the relationship between Ca and Mg right out of the pail (i.e. salts with low Ca, low Mg).
The Grizz
09-26-2011, 09:49 PM
I have found that the boxes of IO Reef Crystals is lower in everything compared to the pails.
makana
09-26-2011, 11:40 PM
every pail of IO I have ever had was around 1100 - 1150 mg tested with Elos.
BlueTang<3
09-26-2011, 11:48 PM
reefers best has a low mg level
carnut
09-27-2011, 12:21 AM
I want you IO salt. Last 4 pails have all been around 840 in mag
ponokareefer
09-27-2011, 01:37 AM
every pail of IO I have ever had was around 1100 - 1150 mg tested with Elos.

This has always been my readings as well.
Myka
09-27-2011, 01:52 AM
Most of my pails of IO have tested calcium 380 ppm, alkalinity 11 dKH, magnesium 1150 ppm for years. I went through 4 pails of H2Ocean and it was 400, 8, 1200. That's using Elos for calcium and alkalinity, Salifert for magnesium.
doch
09-27-2011, 02:35 AM
Thanks for the replies guys... I think I'll go see if the only pet store in town has any IO... likely the best chance of finding it.
JMes
09-27-2011, 03:13 AM
For the lowest magnesium in salt I have used was ATI. I think it was around 600-700 . I don't see it available in most LFS though.