Chelated Iron Dosing Calculation? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 03-06-2013, 09:48 PM Thread Starter
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Chelated Iron Dosing Calculation?

So I've got 13.2% chelated iron. My aquarium is 50gal And it came with a 250ml dosing bottle. However, I don't have any idea of what to dose and the amount.

The rough guide I have so far is 1tsp in the 250ml bottle, dosing twice a week. Also when mixing it with EI regime should I avoid dosing chelate on particular EI days?

EI days as in KNO2 (potassium nitrate) KH2PO4 (monopotassium phosphate) and trace days.
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post #2 of 9 (permalink) Old 03-06-2013, 10:03 PM
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http://calc.petalphile.com/

everything is here. do not dose Fe or traces same day as Phosphate dosing.

DIY Trace/Micro/Macro Recipe
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DIY Trace/Micro/Calculation Etc
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post #3 of 9 (permalink) Old 03-06-2013, 10:11 PM
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Quote:
Originally Posted by happi View Post
http://calc.petalphile.com/

everything is here. do not dose Fe or traces same day as Phosphate dosing.
Yeah, this is the calc I used.

I had a 500ml bottle (empty water bottle) and wanted to dose an easy to remember amount, so I chose 5mL

using the calculator, plug in those values and it will tell you have many grams of chelated iron to add to the 500ml water.

Ive been using my mixture for a few months and my reds are very strong, so Im happy.


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post #4 of 9 (permalink) Old 03-06-2013, 10:13 PM
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If you want some moar background, or fun to figure it out yourself, or like spreadsheets, here are some ideas too. But using the online calculator is probably easier.


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post #5 of 9 (permalink) Old 03-06-2013, 10:32 PM Thread Starter
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Ok guys

"18.199 g EDTA Fe (13%) to your 250.0 mL dosing container. Add 10.0 mL of that mix to your 50.0 US gal aquarium to yield
Element ppm/degree
Fe 0.50"


Just one further question how do I measure out 18.99g in tsp?
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post #6 of 9 (permalink) Old 03-06-2013, 10:41 PM
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You don't... for things like this you need a scale with gram precision. They run around $10 if you shop around a bit.


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post #7 of 9 (permalink) Old 03-06-2013, 10:50 PM Thread Starter
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Say it aint so?

I need to buy a gram precision scale to dose edta iron? Surely there must be an alternative way to get a near enough measurement without having to buy a electronic scale to measure out this dosage to precision? I thought it was more about consistency?

*EDIT*

I tsp = 5g so literally nearly around 3 and half tsp

If u want an accurate

1 tsp = 4.76g
so x = 18g

18*4.76 = x
3.7 =x

So nearly 18g = 3.7 tsp


Via google
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post #8 of 9 (permalink) Old 03-07-2013, 12:13 AM
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Quote:
Originally Posted by malloy85 View Post
Say it aint so?

I need to buy a gram precision scale to dose edta iron? Surely there must be an alternative way to get a near enough measurement without having to buy a electronic scale to measure out this dosage to precision? I thought it was more about consistency?

*EDIT*

I tsp = 5g so literally nearly around 3 and half tsp

If u want an accurate

1 tsp = 4.76g
so x = 18g

18*4.76 = x
3.7 =x

So nearly 18g = 3.7 tsp


Via google
These calculations only hold true for something that has a density of 1 gram/cubic centimetre (millilitre), which is probably not true for your powdered iron chelate.

I would recommend you purchase a scale.

Anthony


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post #9 of 9 (permalink) Old 04-29-2013, 01:40 AM
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I realize that an electronic scale would be the best bet for dosing this. But am I right in assuming that adding less than the reccomended dosage won't hurt anything? There are many people who don't dose Fe at all so I wouldn't think that this would be a problem. I've heard that there is a ball park of 1/3 of the dosage of traces is about where you want to dry dose Fe, is this information erroneous?

Thanks,
Joshua

Piano
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