Inert Soil + EI Dosing = ? - Page 2 - Substrates - Aquatic Plant Central

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Old 04-17-2019, 06:52 PM   #11 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

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Originally Posted by Reediculous_nanotank View Post
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.
Seachem flourite is so low on the CEC rating chart it may as well be "zero".
Doubtful it will supply little if any nutrients to plants.

SafeTSorb looks the same and has a very high CEC rating.

Everything on YouTube is true of course!

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Old 04-18-2019, 05:14 AM   #12 (permalink)
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Originally Posted by Maryland Guppy View Post
Seachem flourite is so low on the CEC rating chart it may as well be "zero".
Doubtful it will supply little if any nutrients to plants.

SafeTSorb looks the same and has a very high CEC rating.

Everything on YouTube is true of course!
Very interesting, I would have never thought that, and it seems safTsorb has a lot of horticultural uses. I have heard of bonsai hobbying using it in their soil mixes too.

My main question is still if Fluorite can be considered to supply nutrients (let's say micros and trace elements) without first being "enriched" by being used in a fertilized water column. It doesn't have much to do CEC.
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Old 02-22-2020, 12:45 AM   #13 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

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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.
Hi DutchMuch,

I am planning to have an inert substrate in the tank that I'm just setting up. I'm not new to fishkeeping and planted tanks. I will not be going down the EI route. By adjusting light intensity and spectrum, I will then adjust CO2 and ferts dosing accordingly. Does that sound workable/OK?

Yorkie

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Old 02-22-2020, 09:31 AM   #14 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

Quote:
Originally Posted by Reediculous_nanotank View Post
Very interesting, I would have never thought that, and it seems safTsorb has a lot of horticultural uses. I have heard of bonsai hobbying using it in their soil mixes too.

My main question is still if Fluorite can be considered to supply nutrients (let's say micros and trace elements) without first being "enriched" by being used in a fertilized water column. It doesn't have much to do CEC.
Flourite is an inert substrate, which will not supply any of the needed nutrients. The first thing that has to happen before a "rock" can supply nutrients is for some part of the rock to dissolve in the water. That makes the elements in the rock become ions, and plants can only use ions. But, Flourite does not do that.
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Old 03-09-2020, 05:00 AM   #15 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

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Originally Posted by DutchMuch View Post
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.
Hi DutchMuch,

I'm relieved to read what you have said above. You talk about 'Inert Soil' and 'inert substrate'. I think of 'inert substrate' as sand or gravel, for example. I think of 'Inert Soil' as sterilized garden soil. Are you using these terms in this way?

I am planning to use a substrate comprised of only coarse sand (1-2 mm grain size). I don't want to go the EI route as I am unable to carry out 50% weekly water changes. Instead, I will make measurements of key nutrients (as required) and then top up nutrients, as necessary.

Yesterday, I stumbled across a statement made by Diana Walstad in her book Ecology of the Planted Aquarium in which she says "Tanks with pure gravel substrates are hopeless for growing aquarium plants". This is in the Feb 2020 Revision on page 137.

Over the last couple of weeks, I have started a new aquarium. The substrate is in place and 50 litres of water is already in there. I don't want to remove these - obviously - but Diana Walstad's comment is making me wonder how best to proceed. Any thoughts?

Yorkie
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Old 03-09-2020, 05:58 AM   #16 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

Many of us have had very successful tanks using inert substrates and dosing the needed nutrients into the water. It is easier to be successful if you follow the El Natural method described in Diana Walstad's book, but that doesn't mean you can't be successful with a different method. Whether you start over or not is up to you.
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Old 03-09-2020, 12:05 PM   #17 (permalink)
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Default Re: Inert Soil + EI Dosing = ?

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Originally Posted by hoppycalif View Post
Many of us have had very successful tanks using inert substrates and dosing the needed nutrients into the water. It is easier to be successful if you follow the El Natural method described in Diana Walstad's book, but that doesn't mean you can't be successful with a different method. Whether you start over or not is up to you.
Many thanks for your reassuring feedback. Based on what you have said, it seems odd that Diana Walstad would say "Tanks with pure gravel substrates are hopeless for growing aquarium plants". I do hope she replies to this thread in order to explain why she made this statement.

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