Magnesium Super High in Newly Mixed Saltwater - Is it Safe to Use?

[that Fish Guy]

I just got a New Bucket of Salt.

Everytime I get a New Bucket I Check all the Parameters of the Newly Mixed Salt Water to Make Sure Nothing is Out of the Ordinary.

But this time this is what I got.

Salinity 1.026
Alkalinity 8.6
Calcium 460
Magnesium 1860

The High Magnesium Really Concerns Me.

I just talked to a guy that told me all his Corals were Dying.

He said his Magnesium was like 2200 or 2400 though.

Is this Safe to Use?

[that Fish Guy]

Another Thing that worries me is if the Magnesium is High What Else Might be High?

I read somewhere that they put Copper in the Salt (I have no Idea why since it Kills Corals).

What if in Addition to Magnesium I have High Copper and all My Corals Die?

[Horace]

What salt is it? That indeed is very high. But pending your current tank level, and how large your WC is...it could be a small impact...if your tank is sub 1250, it may actually help

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[that Fish Guy]

What salt is it? That indeed is very high. But pending your current tank level, and how large your WC is...it could be a small impact...if your tank is sub 1250, it may actually help

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The Salt is Tropic Marin Pro.

I Switched to this Salt because Reef Crystals Parameters were all Over the Place and TMP is one of the Most Stable Salts Out There.

I have used 10 Buckets Now and have never had a Problem with Tropic Marin Pro.

I Keep my Magnesium at 1440

I do Large Water Changes (Around 60 to 70 Percent).

[Horace]

I guess TMP is not so stable is it :)

I would contact the vendor for a replacement. That bucket is obviously had a QC issue

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[ezerasurfr]

Red Sea Coral Pro has always been the most consistent for me. I'm on my first 200g box of Reef Crystals and so far am not totally impressed.

[that Fish Guy]

I am not looking to change salts.

I am just wondering if this is safe to use.

[Potatohead]

Personally I would return it and get another batch, or at the very least buy another box and mix it maybe 75/25 with the old stuff. Mag is expensive so to see it so high is surprising.

[that Fish Guy]

Anybody every use a Salt with this High of Magnesium.

What were the effects (Good or bad)?

[Horace]

Anything that out of whack is not good, and like u said...if that is off, what are the chances it is the only thing not right. I would say slim to none...

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[regtur]

myself I kept getting high phosphate and mag, levels from reef crystals plus algae problems I went to fluval salt been happy. but if I were you its cheaper to buy another keg than to destroy your tank, call the number on the box and ask the source.

[regtur]

My son saw your post and asked if your using ro water, and did you check it before salt?

[jbvdhp]

High mag hasn't been a problem
For me. I've run my mag that high to battle bryopsis and it works. Personally I wouldn't be afraid to use it.


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[FortyFour]

Why risk it?

[that Fish Guy]

My son saw your post and asked if your using ro water, and did you check it before salt?

Yes, I always use RO and I always Check it Before Using It.

It is 0 TDS.

[that Fish Guy]

High mag hasn't been a problem
For me. I've run my mag that high to battle bryopsis and it works. Personally I wouldn't be afraid to use it.


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Right, I know people Keep it that High for that Reason.

But you just Dose Magnesium for that Reason So ONLY the Magnesium is High.

With the Salt I am Concerned that other things that I cannot Test for Might be High as well.

[jbvdhp]

Right, I know people Keep it that High for that Reason.



But you just Dose Magnesium for that Reason So ONLY the Magnesium is High.



With the Salt I am Concerned that other things that I cannot Test for Might be High as well.



You're right. Didn't think of the other stuff. TM salt is supposed to be top notch so I can't imagine it being "bad" but all manufacturers mess up sometimes.


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[C.Eymann]

What test kit are you using ? Did you retest to make sure? What is your tank testing at with this kit, if it really is that high I would return it even though it would probably be fine for smaller WCs. I'm surprised as TM sources it's base from HW I believe, and HW has always readd consistent for me.

Edit- you shaking/mixing the bucket of salt before use?

[JWClark]

I think there is variability between TM pro buckets. I switched to this for the lower alk and am now on my third bucket. I test mixed water every time before adding to my auto change container.

1st bucket was 6.7 dKH, 420 Cal, 1180mg
2nd bucket was 7.5 dKH, 430 Cal, 1250mg
3rd bucket is 8.6 dKH, 450 Ca, 1440mg

I know these are true as I get 4-5 batches per bucket and the #s w/in each bucket were similar for each batch. I can get all the #s when I get home if interested but don't assume the parameters between buckets are stable.

As for the high Mg, I wouldn't worry if you are only doing 10% weekly water changes.

[that Fish Guy]

What test kit are you using ? Did you retest to make sure? What is your tank testing at with this kit, if it really is that high I would return it even though it would probably be fine for smaller WCs. I'm surprised as TM sources it's base from HW I believe, and HW has always readd consistent for me.

Edit- you shaking/mixing the bucket of salt before use?

I made 4 Buckets of Saltwater and have Tested all 4 Buckets and Used 2 Different Salifert Test Kits.

All 8 Tests came back over 1800

I keep my Tanks Magnesium at 1440

I do Large Water Changes (Around 60 to 70 Percent).

[that Fish Guy]

I think there is variability between TM pro buckets. I switched to this for the lower alk and am now on my third bucket. I test mixed water every time before adding to my auto change container.

1st bucket was 6.7 dKH, 420 Cal, 1180mg
2nd bucket was 7.5 dKH, 430 Cal, 1250mg
3rd bucket is 8.6 dKH, 450 Ca, 1440mg

I know these are true as I get 4-5 batches per bucket and the #s w/in each bucket were similar for each batch. I can get all the #s when I get home if interested but don't assume the parameters between buckets are stable.

As for the high Mg, I wouldn't worry if you are only doing 10% weekly water changes.

I do Large Water Changes (Around 60 to 70 Percent).

The Thing that Worries me more than the Magnesium being high is what if other things are high too?

Like Copper (It is ridiculous that they add Copper to Salt and Food).

Doesn't get mixed properly boom all your Corals are Dead!

Why even put Copper in there?

[C.Eymann]

I made 4 Buckets of Saltwater and have Tested all 4 Buckets and Used 2 Different Salifert Test Kits.

All 8 Tests came back over 1800

I keep my Tanks Magnesium at 1440

I do Large Water Changes (Around 60 to 70 Percent).

I would definitely try to return it, like mentioned, might be fine for small W/C but not 60-70%
sorry to hear about your troubles bud.

[that Fish Guy]

I think there is variability between TM pro buckets. I switched to this for the lower alk and am now on my third bucket. I test mixed water every time before adding to my auto change container.

1st bucket was 6.7 dKH, 420 Cal, 1180mg
2nd bucket was 7.5 dKH, 430 Cal, 1250mg
3rd bucket is 8.6 dKH, 450 Ca, 1440mg

I know these are true as I get 4-5 batches per bucket and the #s w/in each bucket were similar for each batch. I can get all the #s when I get home if interested but don't assume the parameters between buckets are stable.

As for the high Mg, I wouldn't worry if you are only doing 10% weekly water changes.

TROPIC MARIN PRO Alkalinity Calcium Magnesium
1 8.8 485 1410
2 10.1 515 1485
3 8.5 475 1350
4 8.9 485 1410
5 8.6 475 1515
6 8.5 470 1410
7 8.3 470 1425
8 9.1 495 1485
9 8.8 475 1365
10 8.9 485 1440
11 8.6 460 1830

Pretty Consistent for me until now.

[that Fish Guy]

I do not mix the bucket because the One Time I did mix it Alkalinity was All Over the Place.

Unlike Most Salts Tropic Marin Pro is Packed Tight in a Bag and Sealed so it Doesn't move around.

You Typically get a 3 to 1 Ratio Magnesium to Calcium.

So since my Magnesium is off (1830) I feel my Calcium (460) and Alkalinity (8.6) should be off too but they are not.

If Calcium was 610 and Alkalinity 12 then I would think yeah I should Mix the Bucket.

So I am thinking my Whole Bucket has High Magnesium Whether I Mix it or Not.

Do you guys Agree with that or no?

[that Fish Guy]

A Few People are Saying to Mix the Salt Before Using It.

What is the Best Way to Go About Doing That?

[thegrun]

Even if you make large water changes I don't see the 1860 level as problematic. That said I would return the salt mix if it isn't too much trouble. When you get a new bucket or box of salt you should pour the contents into 3 or 4 other buckets, mix up the salt in each bucket and then recombine the salt into a single bucket, pouring just a little at a time from each bucket into the main bucket to thoroughly mix it.