DIY Manganese Recipe Library

[Miami Reef]

There are a lot of manganese recipes scattered around this forum with different stock concentrations and chemical compounds. I’ll try to have them all in this thread.


manganese sulfate tetrahydrate

manganese gluconate

manganese(II) chloride tetrahydrate

manganese sulfate monohydrate

manganese glycinate


Hopefully we have it more organized now. If you have a compound unlisted here, and you'd like a recipe for it, please let us know.

 

[JGT]

What about if you use Manganese Sulfate Monohydrate which is what I use. It’s 32% Mn. Figured since your are geeking out I could get you to run some calcs for me. :beaming-face-with-smiling-eyes:

 

[Miami Reef]

Sure! I’ll get it posted soon.

 

[JGT]

Sure! I’ll get it posted soon.

Thanks a lot! No rush.

 

[Randy Holmes-Farley Verified Community Expert]

Another good option is manganese gluconate. I elected that one. :)

 

[Miami Reef]

Another good option is manganese gluconate. I elected that one. :)

What does gluconate turn into when dosed? Is it like a carbon dosing effect?

 

[Miami Reef]

Manganese Sulfate Tetrahydrate:

That product is 25% manganese by weight.

Dissolve 1 gram of the solid material in 1 L of RO/DI. That solution contains 250 mg of manganese, so the concentration is 250 mg/L or 250 ug/mL.

Adding 1 mL to 250 L of tank water will boost aquarium manganese levels by 250 ug per 250 L or 1 ug/L.

Source:
https://www.reef2reef.com/threads/diy-iron-and-manganese-supplement.213509/post-4167953

Manganese sulfate monohydrate is a tiny bit more concentrated since it has slightly less water, but the recipe above works for both. The difference is insignificant.

Source:
https://www.reef2reef.com/threads/diy-iron-and-manganese-supplement.213509/post-13229246

 

[Miami Reef]

Here’s the recipe for manganese gluconate by Randy:

Manganese gluconate is 12.4% manganese by weight.

Dissolve 1 gram of the solid material in 1 L of RO/DI. That solution contains 124 mg of manganese, so the concentration is 124 mg/L or 124 ug/mL.

Adding 1 mL to 100 L of tank water will boost aquarium manganese levels by 124 ug per 100 L or 1.24 ug/L.

Original source:
https://www.reef2reef.com/threads/diy-for-manganese.1084418/post-13137396

 

[ros3to]

Whats the difference between these 2? I ordered this sometime ago can it still be used?

 

[Miami Reef]

Whats the difference between these 2? I ordered this sometime ago can it still be used?

That’s the same compound I posted in the first post. You can use that. It’s Manganese (II) Chloride Tetrahydrate

 

[Randy Holmes-Farley Verified Community Expert]

What does gluconate turn into when dosed? Is it like a carbon dosing effect?


Here’s the recipe for manganese gluconate by Randy:

Manganese gluconate is 12.4% manganese by weight.

Dissolve 1 gram of the solid material in 1 L of RO/DI. That solution contains 124 mg of manganese, so the concentration is 124 mg/L or 124 ug/mL.

Adding 1 mL to 100 L of tank water will boost aquarium manganese levels by 124 ug per 100 L or 1.24 ug/L.

Original source:
https://www.reef2reef.com/threads/diy-for-manganese.1084418/post-13137396

Yes, but miniscule. If you dose the full manganese NSW level at once (~0.2 ug/L) then you'd be dosing about 1.4 ug/L of gluconate, or ~500 ug/100 gallons which is about the same as 0.01 ml vinegar per 100 gallons. :)

My reason for picking it is that I want to combine it with ferrous gluconate, and I wanted to be sure that the manganese didn't pull the gluconate off the iron to put it on itself. I think it wouldn't anyway, but I wanted to be sure. It's one of the types of complexities that always leave me uncertain when folks ask about mixing trace element solutions.

 

[ros3to]

That’s the same compound I posted in the first post. You can use that. It’s Manganese (II) Chloride Tetrahydrate

Got ya, I guess i was kinda confused since the numbers on the bottle are different GRm686 and GRM685.
Thank you!

 

[Miami Reef]

My reason for picking it is that I want to combine it with ferrous gluconate, and I wanted to be sure that the manganese didn't pull the gluconate off the iron to put it on itself. I think it wouldn't anyway, but I wanted to be sure. It's one of the types of complexities that always leave me uncertain when folks ask about mixing trace element solutions.

I don’t like mixing anything with manganese if I can avoid it. It’s too unstable, and it’s easy enough to dose it alone IMO. :)


PSA: Keep manganese closed away from light and air. If the solution ever turns brown, toss it and make a new batch.

 

[rishma]

Let me know what your gonipora says about this..

 

[JGT]

Manganese Sulfate Tetrahydrate:

That product is 25% manganese by weight.

Dissolve 1 gram of the solid material in 1 L of RO/DI. That solution contains 250 mg of manganese, so the concentration is 250 mg/L or 250 ug/mL.

Adding 1 mL to 250 L of tank water will boost aquarium manganese levels by 250 ug per 250 L or 1 ug/L.

Source:
https://www.reef2reef.com/threads/diy-iron-and-manganese-supplement.213509/post-4167953

Manganese sulfate monohydrate is a tiny bit more concentrated since it has slightly less water, but the recipe above works for both. The difference is insignificant.

Source:
https://www.reef2reef.com/threads/diy-iron-and-manganese-supplement.213509/post-13229246

Thank you!

 

[Randy Holmes-Farley Verified Community Expert]

I don’t like mixing anything with manganese if I can avoid it. It’s too unstable, and it’s easy enough to dose it alone IMO. :)

PSA: Keep manganese closed away from light and air. If the solution ever turns brown, toss it and make a new batch.

Yes, it's often a concern to mix things and I've not yet made any of these to test them out. Just have the bottles sitting around....

 

[errolflin]

Another good option is manganese gluconate. I elected that one. :)

Another good reason is that it is the only one non toxic manganese compound (for humans)

 

[rishma]

I don’t like mixing anything with manganese if I can avoid it. It’s too unstable, and it’s easy enough to dose it alone IMO. :)

You either dose by hand or have infinite dosing heads!

Why did you choose Manganese (II) Chloride Tetrahydrate?

I am curious about the pros/cons of various options. I now see a pro for manganese gluconate, possible mixing with ferrous gluconate.

Any reasons to choose one vs another?

 

[Miami Reef]

@Randy Holmes-Farley

Is there a difference in stability and bioavailability of manganese in Manganese Sulfate monohydrate vs manganese chloride (II) tetrahydrate?

No. Both of those will release free Mn++ that may then go on to bind to organics or be oxidized, etc.

 

[rishma]

Why did you choose Manganese (II) Chloride Tetrahydrate?