Inert Soil + EI Dosing = ? - Substrates - Aquatic Plant Central

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Old 09-04-2018, 06:30 AM   #1 (permalink)
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Default Inert Soil + EI Dosing = ?

Hey all, it's been years since I've even put inert substrates in a tank. While picking up some PFS that I saw in one of DutchMutch's tanks I was considering using some for a 'simple' tank, but was curious if EI dosing would be enough? I know root feeders, such as Echinodorus or Cryptocornes will have limited (if any) success, but with stems, I wasn't sure if I could get away with just EI and CO2?

Thoughts?

Being that this was a thought for a display in my living room, I'd prefer not going MGOPS with a cap as this white PFS is just going to get covered with dirt overtime and it's not exactly easy to keep clean.
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Old 09-04-2018, 06:51 AM   #2 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

Inert Soil + EI Dosing = success

I always do inert substrate. All my tanks have it, etc. Except 1 tank I have dirted. Which also turned out 10/10.

EI dosing is definitely "enough" since it provides an excess amount of both micro and macro nutrients to plants. Root tabs are not needed, matter o' fact im actually against the use of them for a few reasons (ex. uncontrolled amount of released nutrients = mess). But they are Simply and beyond not needed in a EI tank- or really any tank (imo).

Burr did a experiment (cant find the link, if someone else could that'd be amazing) That explained how root tabs simply dont make much of a difference at all, and he did that in a EI tank w/ inert substrate (end result was no difference in growth, setups where Exactly the same chemically and physically)
Ei + co2 + inert = success
Ei + Co2 + inert + root tabs = risky success
Ei + inert = 75% success
Ei + co2 + Amazonia = success

Maybe that helps a bit.
Here is a link, dennis wong explains this in Very much further detail I suggest it to you:
https://www.advancedplantedtank.com/...substrate.html
https://www.advancedplantedtank.com/adv_nutrients.html
he also did an article on root tabs:
https://www.advancedplantedtank.com/...-or-water.html
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Old 09-05-2018, 10:52 AM   #3 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

Based on the cation exchange is there such thing as 'priming' an inert substrate?
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Old 09-05-2018, 02:24 PM   #4 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

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Originally Posted by Tihsho View Post
Based on the cation exchange is there such thing as 'priming' an inert substrate?
No
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Old 09-06-2018, 08:21 AM   #5 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

Easy enough. Thanks!
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Old 09-06-2018, 03:21 PM   #6 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

If you try to charge an inert substrate with 0% CEC it will just be relaesed into the water column immediately.
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Old 04-17-2019, 10:34 AM   #7 (permalink)
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Smile Re: Inert Soil + EI Dosing = ?

Just stumbled accross this topic and it sparked a potentially dumb question, haha:

Is the difference between an inert and an active substrate primarily its cation exchange capacity? And perhaps relatedly, does everything with a cation exchange capacity also hold nutrients that are available to plant roots (before it has absorbed cations from the water column, such as how laterite has significant amounts of iron, even before it has been used in a fertilized tank)?

Or is inert vs. active only judged on the basis of nutrients being present and available in the substrate?
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Old 04-17-2019, 05:59 PM   #8 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

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Originally Posted by Reediculous_nanotank View Post
Is the difference between an inert and an active substrate primarily its cation exchange capacity?

And perhaps relatedly, does everything with a cation exchange capacity also hold nutrients that are available to plant roots (before it has absorbed cations from the water column, such as how laterite has significant amounts of iron, even before it has been used in a fertilized tank)?

Or is inert vs. active only judged on the basis of nutrients being present and available in the substrate?
Inert potentially will absorb nothing and release nothing.
Active (depending on substrate) could release, absorb, and/or both.
e.g. Aquasoil will release NH3 and reduce KH.

The intent of a CEC substrate is that compounds will be consumed by the substrate and be available to plants roots.

Many times we see a soil/substrate's composition listed and these compound/elements may not be available for plant uptake.
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Old 04-17-2019, 06:33 PM   #9 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

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Originally Posted by Maryland Guppy View Post

Many times we see a soil/substrate's composition listed and these compound/elements may not be available for plant uptake.
For example, a rock can contain most of the nutrients, but none of them are available to the plants. Plants need ions, like Na+, NH4+, etc., which require the compounds to dissolve in the water.
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Old 04-17-2019, 06:48 PM   #10 (permalink)
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Default

Ok, thanks for answering my question. Do substrates like Seachem flourite red have nutrients that are available to plants? I recently saw a YouTuber claiming that such a substrate would be ideal for supplying iron, and I am wondering if their statement was accurate.
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