Ferrus gluconate + manganaese gluconate

[ReeferTCG]

Hello,

I am using @Randy Holmes-Farley recipe for manganese gluconate and ferrous gluconate. I was wondering If someone was able to successfully combine them in one solution. I want to use it to replace my chaeto grow for my refugium. I have a 200L tank.

Randy’s recepies:

Ferrous gluconate is about 11.6% iron.

If you want 0.04 mL of the additive to add 1 ug/L to 100 gallons (= 378.5 L), then that 0.04 mL needs to contain 378 ug of iron.

378 ug/0.04 mL = 9450 ug iron per mL

9450 ug iron needs 81.5 mg of ferrous gluconate.

Thus, if you add 8.15 grams (8,150 mg) into 100 ml of water, it will have the desired potency

————And manganese ———————————

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.

 

[Randy Holmes-Farley Verified Community Expert]

I combined them. :)

 

[ReeferTCG]

Great! No issues in reduction I think you mentioned before right?

Any other trace i should DIY from chaetogro, I think manganese and Iron are the most limiting.

 

[Randy Holmes-Farley Verified Community Expert]

Great! No issues in reduction I think you mentioned before right?

Any other trace i should DIY from chaetogro, I think manganese and Iron are the most limiting.

I dont think there’s any issue mixing those two.

A number of trace elements deplete rapidly. Iodine is another that I add, though I am not sure it is useful.

I also use AFR, with some trace elements, but the dose is currently low.

 

[ReeferTCG]

Thanks for sharing all your knowledge always!!

 

[Randy Holmes-Farley Verified Community Expert]

You’re welcome.

Happy Reefing

 

[ReeferTCG]

Hey @Randy Holmes-Farley had a quick follow up question. Can I add the ferrous gluconate and manganese gluconate into my AFR container?

Or potentially into my kalk container?

 

[Randy Holmes-Farley Verified Community Expert]

Hey @Randy Holmes-Farley had a quick follow up question. Can I add the ferrous gluconate and manganese gluconate into my AFR container?

Or potentially into my kalk container?

AFR yes.

Kalk likely no, due to precipitation of iron hydroxide. Not certain on manganese in kalk.

 

[ReeferTCG]

Thanks again!!!

 

[Randy Holmes-Farley Verified Community Expert]

You’re welcome.

Happy Reefing

 

[ARB_REEFER]

Good morning Randy, working on a DIY manganese, and fluoride supplement, as my tank takes about 20ml of the 10x solution daily, and close to 300ml for corrections on Fluoride. Iron isn't an insane amount of uptake, about 10mL/daily, however I would like to piggyback the ferrous gluconate, as that will free up a dosing head, and may prove to force me into learning the calculations/conversions of each a bit more. I tend to do better when learning via necessity. Anywho, do you see any issue with this product? Bulk supplements ferrous gluconate is sold out on amazon, as well as their website. Thank you and Happy Holidays!

Amazon product ASIN B01M4FAIX4

 

[Randy Holmes-Farley Verified Community Expert]

Good morning Randy, working on a DIY manganese, and fluoride supplement, as my tank takes about 20ml of the 10x solution daily, and close to 300ml for corrections on Fluoride. Iron isn't an insane amount of uptake, about 10mL/daily, however I would like to piggyback the ferrous gluconate, as that will free up a dosing head, and may prove to force me into learning the calculations/conversions of each a bit more. I tend to do better when learning via necessity. Anywho, do you see any issue with this product? Bulk supplements ferrous gluconate is sold out on amazon, as well as their website. Thank you and Happy Holidays!

Amazon product ASIN B01M4FAIX4

That product should be fine. :)

 

[ARB_REEFER]

That product should be fine. :)

Thank you, kind sir

 

[Randy Holmes-Farley Verified Community Expert]

You’re welcome

Happy Reefing

 

[ARB_REEFER]

You’re welcome

Happy Reefing

Just got my Manganese gluconate in - math check.

Currently dosing 30ml a day of Mn 10x, which equates to 996 mg/L per mL dosed, so 996mcg/mL dosed. This would be dosing 29.88 mg/daily. If I make the manganese gluconate at 9grams/1000mL mixed - this would give me a 1,116mg/L solution, correct? which would break down to 1116mcg/ml? This is all pretty new to me, sans grade school chem back in the early 2000's. I could mix the gluconate a bit lighter, at 8grams/1L, however I can easily dial back as needed and the amount of volume I have been dosing has been the limiting factor in my reasoning to not push a higher mL/dosage in tank.

 

[ReeferTCG]

Hey @Randy Holmes-Farley hope you are well! Had a quick question. I want to experiment with very low lugol dosing. Can I add it to this mix i have going? I keep asking because I only have space for one dosing pump

AFR
Ferrous gluconate
Manganese gluconate
Ammonium chloride

Lugol’s Iodine I want to add now.

In the very distant future y might consider molybdenum and potassium.

 

[Randy Holmes-Farley Verified Community Expert]

Lugols is reactive with materials that can be oxidized such as ferrous iron, making the iron less soluble ferric iron. I personally would not combine them.

 

[ReeferTCG]

Perfect, Thanks!

 

[Randy Holmes-Farley Verified Community Expert]

You’re welcome.

Happy Reefing!