How much iron to dose? PPM? EI. - The Planted Tank Forum
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post #1 of 19 (permalink) Old 10-18-2011, 10:19 PM Thread Starter
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How much iron to dose? PPM? EI.

So I've decided to start dosing along with EI since I'll be switching from millers to CSM+B pretty soon.

How many ppm should I be aiming for? I plan on dosing with 11% DTPA.

This is for a 95G. How often and how much each time?


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post #2 of 19 (permalink) Old 10-18-2011, 11:11 PM
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What is your target ppm? I dose a tad high in my 75g.

Check this calc out. http://calc.petalphile.com/

EDIT:

I forgot to add that most folks aim towards .10ppm. That's a good starting point.

Clint

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Last edited by Dempsey; 10-18-2011 at 11:12 PM. Reason: EDIT
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post #3 of 19 (permalink) Old 10-18-2011, 11:16 PM Thread Starter
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The calculator said for 0.2ppm it would be 0.65g

So how often should I dose?

Not really sure how much ppm I'm going for.


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post #4 of 19 (permalink) Old 10-18-2011, 11:48 PM
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I just used the calc for your tank. If you add 1/8tsp it would be 0.15ppm. So try a tad less then that 3x per week or 1/16tsp daily and see how things go.

Clint

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post #5 of 19 (permalink) Old 10-18-2011, 11:50 PM Thread Starter
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Ok. Is too much iron a bad thing? Since I think I only have a 1/4 tsp spoon. Nothing smaller.
Should I dose with my Plantex CSM+B?


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post #6 of 19 (permalink) Old 10-18-2011, 11:58 PM
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Quote:
Originally Posted by jkan0228 View Post
Ok. Is too much iron a bad thing? Since I think I only have a 1/4 tsp spoon. Nothing smaller.
Should I dose with my Plantex CSM+B?
I dose 2-3x the recommended amount with no issues at all. Sometimes even way more.

I make my mixing solutions with all of my micros together in one bottle.

Clint

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post #7 of 19 (permalink) Old 10-19-2011, 12:07 AM Thread Starter
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I like to dose dry. But probably hooking it up in a solution so I can auto dose once my homework load increases.


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post #8 of 19 (permalink) Old 10-19-2011, 12:11 AM
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No worries! You can dose the CSM and Fe together. Dry or wet.

Clint

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post #9 of 19 (permalink) Old 10-19-2011, 01:38 AM Thread Starter
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Yay. thanks for the help!


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post #10 of 19 (permalink) Old 10-19-2011, 01:48 AM
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B 0.17
Cu 0.01
Fe 0.94
Mg 0.20
Mn 0.27

This is about what I dose for my tanks per dose, 3-4x a week.

~1ppm is a typical dose for Fe.

Not 0.1ppm.

FYI..............




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post #11 of 19 (permalink) Old 10-19-2011, 03:11 AM
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Quote:
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B 0.17
Cu 0.01
Fe 0.94
Mg 0.20
Mn 0.27

This is about what I dose for my tanks per dose, 3-4x a week.

~1ppm is a typical dose for Fe.

Not 0.1ppm.

FYI..............
It's funny how when you have your mixes written down, you forget about the numbers.

Sorry about that OP. I had the seachem iron mg/L in my head. I think that was .10.....

Either way, the 1/4tsp would get him right in the middle of the recommended EI dose for Fe, right? Or at least according to the calc.

Of course that all depends on the demand of the plants from the lights....

I have been dumping about 1/2tsp 3x/week. Well, half that each day anyways.... Then whatever CSM has in it on top of it....

I hope I haven't been to lean... Plants seem happy though.

Clint

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post #12 of 19 (permalink) Old 10-19-2011, 03:15 AM Thread Starter
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I have high light and CO2 so if 1/8 puts me at 0.15 then I would probably just add 1tsp? Thats just easier to dose... THanks for the numbers Tom!


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post #13 of 19 (permalink) Old 10-19-2011, 03:24 AM
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I've been dosing 1/16 tsp 3x per week plus what's in CSM+B on my 55G and thinking that was high.

-VeeSe

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Last edited by sewingalot; 10-20-2011 at 05:07 AM. Reason: no allusions to swearing
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post #14 of 19 (permalink) Old 10-19-2011, 03:26 AM Thread Starter
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Haha, now I'm confused.


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post #15 of 19 (permalink) Old 10-19-2011, 05:36 AM
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Folks ask me how much I dose, it's often quite a bit.......except for NO3 and light really, but that's still 15ppm 2-3x a week also.

CO2, most of the rest are quite high.

If you plug and chug, I add about 2-4ppm a week typically.

The ONLY research study on submersed plants and Fe I've ever found was on Hydrilla and it had a max growth rate at 6ppm and a max uptake at 8ppm.

0.1ppm comes from the old old days of PMDD....when folks used 2-5x less light.........50% to 20% of typical CO2 ppm's...........and thought Fe excess caused algae

And then a couple of methods copied that amount lock stock and barrel and did not test things themselves. Or worse, if they did test, they did a bat guano poor job at it.

The research ref is from Haller 1977.
http://www.sciencedirect.com/science...04377077900390

Another concerning translocation from the leaves to roots and vice versa:
http://www.springerlink.com/content/j314607751762514/

NEVER once has anyone cited either of these in 15+ years in this hobby other than myself. Not once.......

But what do I know?




Regards,
Tom Barr
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