Manganese, Molybdenum, and Vanadium; are these useful additives?

[SteadyC]

I do dose Mn, mainly because I have two Alveopora corals. I had polyp regression issues with two of these corals in the past, and did a ton of research on cause. I found a few articles that listed Mn as being important for gonipora and Alveopora, on advancedaquarist if I recall correctly. One of these corals, had not extended polyps for probably 6 months before I started to dose Mn, I could see the polyps but they stayed at the edge of the skeleton and would not extend out, and now it is extending polyps 1/2 inch or so. I dose 1-2 ml per day of Triton Mn, the Alveoporas are doing well, I don’t get a reading on Triton though, and I do have chaeto. As long as I am getting polyp extension, that’s my sign that Mn is available, that’s enough for me . I am about to,start Red Sea D Colors, which has V.

 

[Randy Holmes-Farley Verified Community Expert]

I do dose Mn, mainly because I have two Alveopora corals. I had polyp regression issues with two of these corals in the past, and did a ton of research on cause. I found a few articles that listed Mn as being important for gonipora and Alveopora, on advancedaquarist if I recall correctly. One of these corals, had not extended polyps for probably 6 months before I started to dose Mn, I could see the polyps but they stayed at the edge of the skeleton and would not extend out, and now it is extending polyps 1/2 inch or so. I dose 1-2 ml per day of Triton Mn, the Alveoporas are doing well, I don’t get a reading on Triton though, and I do have chaeto. As long as I am getting polyp extension, that’s my sign that Mn is available, that’s enough for me . I am about to,start Red Sea D Colors, which has V.

Very interesting. Thanks for the info.

 

[SteadyC]

Very interesting. Thanks for the info.

you're silly today, , I found the article, Sprung wrote it, but there’s lots of references to your materials too about Fe
https://www.advancedaquarist.com/2002/12/inverts

Was just sharing my real world experience with Mn I didn’t have a positive experience with Fe though.

 

[dr.fish]

Very interesting thread.
I have a fully loaded 400G mostly filled with SPS witch i am very successful at growing but i have never been able to keep any goniopora. I must say that i have a large refuge 24 ' x 24' filled with cheato. recently i noticed that the cheato was not growing well so i made a couple of research and i learn that depleted mn and iron could be the cause. Since then i started dosing Kent iron supplement that also have mn and the cheato started growing again. I might try a gonio to see if it could help.
Another question, could this 3 elements be responsible for certain colors? I have a kind of purple that i cannot reach. Not the kind that the bonsai have but the kind the pink cadillac must have.
What i also observe recently is bringing the K from 350 to 400 the fluorescence increased a lot.

 

[Randy Holmes-Farley Verified Community Expert]

you're silly today, , I found the article, Sprung wrote it, but there’s lots of references to your materials too about Fe
https://www.advancedaquarist.com/2002/12/inverts

Was just sharing my real world experience with Mn I didn’t have a positive experience with Fe though.

Thanks. I’d seen the initial articles, just not much from folks following up to see if it helped.

Did you have a negative experience with iron, or no effect?

 

[SteadyC]

Thanks. I’d seen the initial articles, just not much from folks following up to see if it helped.

Did you have a negative experience with iron, or no effect?

Mostly likely overdose was my issue. I was following the dosing instructions on back of Sprung’s Iron concentrate, and I had an algae outbreak. It seems his dosing instructions are high, at least in my experience, My Alvs regressed, I had algae growing on tips of my acros, a digitata almost died completely. I was using a toothbrush to get the algae off the tips, 3 times a week. When I stopped iron, the algae issues went away, from tips of acros, and the almost dead digitata made a full recovery and growing really fast now. I’m now trying Red Seas Color C (their FE and other stuff supplement), half dosage weekly. I can’t recall if I had as much macroalgae then, as I do now. I think I was running a mature ATS at that time. Then I did a Triton test a few months later, and it mentioned Mn may benefit alvs and gonos, and have been doing MN for 9 months with great results on my alvs.

I know your advancedaquarist article states Fe shouldn’t have a large negative impact, I read somewhere else that it can contribute to algae growth, which was my experience, it was a bad experience. Maybe because I didn’t have macroalgae then.

 

[Randy Holmes-Farley Verified Community Expert]

I know your advancedaquarist article states Fe shouldn’t have a large negative impact, I read somewhere else that it can contribute to algae growth, which was my experience, it was a bad experience. Maybe because I didn’t have macroalgae then.

If the tank is iron limited, adding iron may cause growth of algae. Adding even more iron doesn't cause "more" algae growth, and some folks (Glennf and Red Sea, for example) use very high doses of iron without "causing" problems. That said, if algae is iron limited (as it is in some parts of the ocean), then other photosynthetic organisms may be as well (e.g., corals).

FWIW, some tanks with very high nitrate and phosphate and no algae may be iron limited and I've been waiting to see what happens in some of these (e.g., Richard Ross' tank) when iron is dosed.

 

[SteadyC]

If the tank is iron limited, adding iron may cause growth of algae. Adding even more iron doesn't cause "more" algae growth, and some folks (Glennf and Red Sea, for example) use very high doses of iron without "causing" problems. That said, if algae is iron limited (as it is in some parts of the ocean), then other photosynthetic organisms may be as well (e.g., corals).

FWIW, some tanks with very high nitrate and phosphate and no algae may be iron limited and I've been waiting to see what happens in some of these (e.g., Richard Ross' tank) when iron is dosed.

Tomorrow I’ll see if my logs show when I ended iron, and what my nitrates were.