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Iron deficiency and which chelator do I need?

ceg4048

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What about the floating plants @ceg4048 ? It seems logical to me to fix the issue thats showing up with the non CO2 limited floaters before one starts tackling any algae issues. Of course you could do both at the same time but you cant discount those white floating plants as a problem too.

Hi Hufsa,
Honestly I can't really see anything wrong with the floaters in post 15, but choosing between solving a trace problem, if it exists, and a CO2 problem - well, I always choose to tackle CO2. I mean, really, it there is a shortage of trace then just add more trace. That is so simple. I never worry about traces and I never have trace problems. All this hand wringing about Iron. I never even bother to worry about what chelator I'm using. Whatever I have is good enough. Seriously, I can't even remember when was the last time I had an Iron deficiency.

On the other hand, look at the devastation being caused by the algae. That'll not be easy to fix as just adding more CO2.

Cheers,
 

Beaker

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I did a PH profile. Without CO2 my ph hovers around 7.9 and it drops to 6.5 from when the lights turn on to when the lights turn off. After I got the co2 to 6.5 the whole photo period, the HC cuba exploded and looked very healthy. That is when I started having the white plants show up. I can try to start increasing co2 but every time I do, the fish start to gasp.

I have been adding more trace and it doesn't seem to help.

I use tap water and we have a whole house salt free water softener. Could that cause the Mg to be unavailable to the plants causing the whiteness? The water softener is new within the last couple of months. I haven't been able to find much information about softeners and planted tanks.
 
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dw1305

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Hi all,
I use tap water and we have a whole house salt free water softener. Could that cause the Mg to be unavailable to the plants causing the whiteness?
It could be, but it would depend how the water softener works.
I can't really see anything wrong with the floaters in post 15
what about the floating plants @ceg4048 ? It seems logical to me to fix the issue thats showing up with the non CO2 limited floaters
The Spirodela polyrhiza are definitely chlorotic, the question would be whether that paleness effects the older or the newer leaves.

cheers Darrel
 

dw1305

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Hi all,
It is the newer leaves. I see the new leaves coming in white
That is what we need to know. It is an iron (Fe), or just possibly manganese (Mn), deficiency. They are elements that <"are immobile within the plant">, so it can't import them to new leaves, and that is where you see the chlorosis deficiency symptoms.

I don't know which iron chelators are available to you in the USA, but you would ideally want FeEDDHA or FeDTPA in harder water. It won't be to every-ones taste, but if I was having issues I would use FeEDDHA and the <"pink tint"> method.

Plants don't need a lot of manganese, and most manganese compounds are soluble, so that is less likely as an issue. In the UK you can buy <"Chempak Sequestered Iron"> which adds iron, manganese and magnesium (Mg) to cover all bases. My guess would be something similar will be available for you.

cheers Darrel
 

ceg4048

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I did a PH profile. Without CO2 my ph hovers around 7.9 and it drops to 6.5 from when the lights turn on to when the lights turn off. After I got the co2 to 6.5 the whole photo period, the HC cuba exploded and looked very healthy. That is when I started having the white plants show up. I can try to start increasing co2 but every time I do, the fish start to gasp.

I have been adding more trace and it doesn't seem to help.

I use tap water and we have a whole house salt free water softener. Could that cause the Mg to be unavailable to the plants causing the whiteness? The water softener is new within the last couple of months. I haven't been able to find much information about softeners and planted tanks.
OK, so as always, when your CO2 profile is good but the fish suffer hypercapnia then that means your flow/distribution is in question.
This is the area you'll need to tackle. It's very likely that when you fix your flow/distribution then you'll also fix whatever nutrient problems you have.
Again, I would forget about unavailable Mg. None of those speculations are valid. I'm not familiar with your salt-free softener. The only ways I'm aware of are the resin based units that use either the Sodium Chloride or Potassium Chloride salts, or the Reverse Osmosis systems. If you use a different method then perhaps you can explain what the mechanism is.
In any case, once the water is in the tank then it's isolated and adding Fe and Mg or whatever nutrients will solve that problem.

I haven't see any photos of how you are distributing the flow or any description of your filtration/pumps. We can have a look at that and determine if some improvements can be made.

Cheers,
 

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