Metals+, iron level drops quickly

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  • Andy
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Hello,

I got Colombo Metals+ and the iron test kit.  I dose up to 0.15 ppm as per instructions and found it drops very quickly back to zero in the tank (like a few hours later).

Is this normal?  Should I dose it back to 0.15 ppm straight away?  Or should it be once a week or something?

Thanks

Gav

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Reply #1

Could it be the iron is binding to Phosphates and being skimmed off ?

HK_Fuey

  • Graeme
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Reply #2

Could well be, or being absorbed by corals, and inverts (they use it for their shells I believe).  Still seems very fast.

@Colombo - got any advice?

Thanks:


ajm83

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Reply #3

Thanks chaps,


I forgot to add that I'd switched the skimmer and carbon/cuprasorb off before dosing.


@Colombo  Also I should say that I love the test kits!  The instructions are so easy, you can just glance at the pic on the back of the colour matching card (genius putting on there) and know what you're doing.

Paddone

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Thanks:


ajm83

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Reply #5

 
Interesting article you might find helpful:

Chemistry And The Aquarium: Iron In A Reef Tank — Advanced Aquarist | Aquarist Magazine and Blog


Thanks @Paddone Sounds like a lot of things can either react or combine with it.   


Problem is, you base your dosing of Metals+ on the iron level.  So are those reactions also removing the other things in Metals+ or just the iron... 




Paddone

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Reply #6

I'm new to reefing so take all of this as based on science not reefing experience...

I expect that most reefers are adding iron without even realising it. Fish food will contain iron (just as human food does, animal and vegetable). Uneaten fish food which is broken down by bacteria will release traces of iron into the water column. It will be quickly utilised by algee or sediment/skim out.

Much like your tank inhabitants are constantly creating ammonia but it is being processed simultaneously so doesn't show in tests. I expect a similar process is occurring with iron in your tank. It's there but fleeting and not detectable.

If you dose lots of iron it will probably help your algee process nitrates better but too much iron runs a small risk of causing iron overload in your fish.

What is your main reason for dosing iron?

ajm83

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Reply #7

 
I'm new to reefing so take all of this as based on science not reefing experience...

I expect that most reefers are adding iron without even realising it. Fish food will contain iron (just as human food does, animal and vegetable). Uneaten fish food which is broken down by bacteria will release traces of iron into the water column. It will be quickly utilised by algee or sediment/skim out.

Much like your tank inhabitants are constantly creating ammonia but it is being processed simultaneously so doesn't show in tests. I expect a similar process is occurring with iron in your tank. It's there but fleeting and not detectable.

If you dose lots of iron it will probably help your algee process nitrates better but too much iron runs a small risk of causing iron overload in your fish.

What is your main reason for dosing iron?


The reason I'm dosing it is not specifically for iron, Metals+ is part of the Colombo colours dosing system.  Basically a bunch of traces a bit like the RedSea Colors programme.


Long story short, everyone says "get nutrients low, light high and the big 3 stable and your corals will do well"  ... well not in my tank they don't!    They don't bleach or brown,  the colours just fade away.

So I got an ICP test, and found some problems which I am now aiming to correct.  One problem being that the elements present in Metals+ were all zero in the test results.  Hence dosing this to see if it helps.

Paddone

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Reply #8

I see, sorry I can't be much help.

ajm83

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Reply #9

In case this helps anyone else, I've had a reply from Colombo on this.  All three should be tested and added where necessary once per week. 


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