diy iron and manganese supplement

[scoty254]

Thanks very much. I had an extra dilution step.

What you wrote is correct.

The last sentence of what I wrote is wrong.

It works if we change my recipe to read as:

Dissolve 1 gram in 1000 mL (grams) fresh water. Manganese = 280 ppm.

Take 1 mL (1 g) of that mix and dissolve in 100 mL of fresh water. Mn = 2.8 ppm (=2800 ug/L).

Add 13.5 mL of that to 100 gallons of tank water. Conc boost to tank = 0.1 ug/L Mn.

Yes this is correct with my calculations too.
Thanks for confirming. As I’m rather bad in math and chem especially it got me confused and put a lot of uncertainty in my own calculations .
Good to know I was also right

 

[Isaac Alves]

@Randy Holmes-Farley

I’m using 1 Fergon tablet of Ferrous Gluconate. The supplement is 27mg per tablet.

I’ve measured out 27ml of RODi to dissolve the tablet.

I don’t think I’ve come across a description of the resulting liquid or how long the dissolving process takes.

After about 40 minutes the fluid is a milky greenish yellow color:

And the tablet is still dissolving.

Am I seeing the correct color? And how long does the dissolving process take at room temp water?

Thank you

 

[Randy Holmes-Farley]

@Randy Holmes-Farley

I’m using 1 Fergon tablet of Ferrous Gluconate. The supplement is 27mg per tablet.

I’ve measured out 27ml of RODi to dissolve the tablet.

I don’t think I’ve come across a description of the resulting liquid or how long the dissolving process takes.

After about 40 minutes the fluid is a milky greenish yellow color:

And the tablet is still dissolving.

Am I seeing the correct color? And how long does the dissolving process take at room temp water?

Thank you

That’s what I recall it looking like. In my case the tablet completely fell apart after a bit. Then swirl to mix and release the iron, let the solids settle out, and use the clear green liquid (the solids aren’t a big issue if they get to the tank).

 

[Miami Reef]

Yes. That’s exactly how it looks like. I used a magnetic stirrer, but it still took a while to disintegrate.

It just needs contact time with water, as Randy suggested. Mixing more doesn’t seem to hasten the process.

 

[Isaac Alves]

@Randy Holmes-Farley / @Miami Reef

Are there special storage requirements for ferrous glucanate fluid long term: light issues, container material, etc. ?

Thank you in advance.

 

[Randy Holmes-Farley]

@Randy Holmes-Farley / @Miami Reef

Are there special storage requirements for ferrous glucanate fluid long term: light issues, container material, etc. ?

Thank you in advance.

Keep it closed to limit O2 entry. If it turns brown, I’d toss it and make a new batch. .

 

[H.herry]

Can I use that for manganese dosing

 

[Randy Holmes-Farley]

Can I use that for manganese dosing

Yes.

 

[H.herry]

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.

Sorry Randy and I use that for recipe ? Just want to make sure.

 

[Randy Holmes-Farley]

Sorry Randy and I use that for recipe ? Just want to make sure.

I don't understand. That is a recipe for iron dosing that should work well, but you may have to decide what ug/l dose you want to attain.

Here's what I personally did:

One Fergon tablet (ferrous gluconate) contains 27 mg of iron. Dissolve that in about 27 mL RO/DI (my recommendation, but other concentrations are OK, just don't dilute too much), the concentration is about 27 mg/27 ml ~ 1 mg/mL.

I dose ~1 mL to my tank with a volume of about 300 gallons ) once or twice a week.

 

[Miami Reef]

don't understand. That is a recipe for iron dosing that should work well, but you may have to decide what ug/l dose you want to attain.

Here's what I personally did:

One Fergon tablet (ferrous gluconate) contains 27 mg of iron. Dissolve that in about 27 mL RO/DI (my recommendation, but other concentrations are OK, just don't dilute too much), the concentration is about 27 mg/27 ml ~ 1 mg/mL.

I dose ~1 mL to my tank with a volume of about 300 gallons ) once or twice a week.

He posted a picture of manganese sulfate monohydrate and you said it was good to use for manganese dosing, then he wanted the recipe to dose manganese with that chemical.

 

[Randy Holmes-Farley]

Oh sorry, my confusion. The pictured manganese sulfate monohydrate bottle is good to use and is close enough to use the exact recipe posted (manganese sulfate tetrahydrate). That pictured one is just a little more potent solid since it claims to have less water in the solid crystal.