Grow More Iron Chelate 10% and other chelates
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Old 08-25-2015, 05:35 AM   #1
Lazaro
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Grow More Iron Chelate 10% and other chelates


I have two questions:

First can i get a breakdown of edta, dhtp and eddha. I head one is good for soft low ph and another is good for hard high ph...one lasts for 4-6hours the other last for 3 days...depending on hardness and ph? I'm not quite clear among all the searches i did.

In case of soft water and low ph, which one would be good?

Second, any of these okay as source of iron:

Amazon.com: Grow More 7451 2-Pound Organic Iron Chelate: Patio, Lawn & Garden Amazon.com: Grow More 7451 2-Pound Organic Iron Chelate: Patio, Lawn & Garden

Amazon.com : Grow More 6546 EDDHA Iron Chelate, 1-Pound : Patio, Lawn & Garden Amazon.com : Grow More 6546 EDDHA Iron Chelate, 1-Pound : Patio, Lawn & Garden

First one has HEDTA as oppose to EDTA. From my laymans understading, does the H break off from the EDTA when in water?

Second one has eddha which i hear last longer in water and doesn't precipitate or degrade in light? However, I recall some people turned off buy it's brown pinkish hew it leaves. Any experience?

Here's a picuture of edta vs eddha for what it's worth, again eddha possibly kickin butt due to being light proof:

Last edited by Lazaro; 08-25-2015 at 05:16 PM.. Reason: Typo
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Old 08-25-2015, 07:20 AM   #2
Raymond S.
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DTPA is for lower PH.
I would rather pay two cents more and get the type made for aquariums from one of
the people who sell it on the forum such as this one whom I have bought from with
no issues etc.
http://www.plantedtank.net/forums/sh...d.php?t=898001
I had curling of the leaves and the underside of them was yellow till I added the DTPA.
Apparently the type of plant wasn't happy with the amount supplied by the CSM+B
that I was dosing. That contains the EDTA type from what I hear.
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Old 08-25-2015, 04:08 PM   #3
Lazaro
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Read Plantex CSM has EDTA and mixing with DTPA makes for wider range or chelates hence more iron absorption if recall correctly.

Came across a picture of the stability of different chelates at different PH:



Picture from this sight

Perhaps answered part of first question. That still gets me curious how hardness comes into play when chelates break down.

My other question, is the H in HEDTA toxic to fish or is the OH fine?

Would be great since this stuff is cheap at a local nursery.

Last edited by Lazaro; 08-25-2015 at 04:16 PM.. Reason: response to Raymon and format
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Old 08-26-2015, 08:42 AM   #4
Lazaro
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Guess I'll bump. Looks like HEDTA is one notch lower that DTPA interms of stability/ph factor.

Really want to use
Grow More Iron Chelate 10% Grow More Iron Chelate 10%
being so local and cheap.

Anyone want to chime in on this?
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