New Fluorite nutrient content posted by Seachem - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 04-23-2008, 09:26 PM Thread Starter
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New Fluorite nutrient content posted by Seachem

Looks like Seachem just posted the nutrient content for their new substrates; Dark, Black, and Black sand- just click on the respective link from this page: http://www.seachem.com/products/gravels.html

I'm asking them whether or not they've done bioavailability studies and I'll get back with their answer...





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post #2 of 6 (permalink) Old 04-23-2008, 10:10 PM
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its basically kitty litter, no need for further study.


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post #3 of 6 (permalink) Old 04-24-2008, 12:13 AM
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Silica sand, SiO2 is a source of O2 under some folk's definitions
Try and get O2 out of it sometime.

Same is true to touramline sand baloney they sell in homeopathics places and sadly, in this hobby as well.

Flourite is good, but things like CEC, bioavilable or extractable nutrients is far more meaningful parameters when discussing sediment as well as the redox values required to reduce and make such nutrients available to plants.
Adding citric acids etc are often used to see how a plant might reduce some of the nutrients in sediments.


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post #4 of 6 (permalink) Old 04-24-2008, 01:37 AM
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Quote:
Originally Posted by plantbrain View Post
Silica sand, SiO2 is a source of O2 under some folk's definitions
Try and get O2 out of it sometime.

Same is true to touramline sand baloney they sell in homeopathics places and sadly, in this hobby as well.

Flourite is good, but things like CEC, bioavilable or extractable nutrients is far more meaningful parameters when discussing sediment as well as the redox values required to reduce and make such nutrients available to plants.
Adding citric acids etc are often used to see how a plant might reduce some of the nutrients in sediments.


Regards,

Tom Barr
That makes a lot of sense. So, does the use of leonardite increase the bioavalability of nutrients that plant roots can pull out of the substrate and or water column, with all other things being equal(sufficient c02, appropriate water column fertilization, and appropriate lighting)?

It is my understanding that leonardite "promotes the conversation of a number of elements into forms available to plants," it is "rich in both organic and mineral substances essential to plant growth", "increases the permeability of plant membranes; promoting the uptake of nutrients" Source: http://www.healthyhomemall.com/about-humic-acids.asp

This is more in reference to terrestrial plants but I am assuming that it may apply for aquarium plants as well.
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post #5 of 6 (permalink) Old 04-24-2008, 01:49 AM
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Originally Posted by aquanut415 View Post
its basically kitty litter, no need for further study.
Unless I am mistaken, kitty litter is made from fuller's earth which makes it more like Schultz Aquatic Soil than fluorite.
http://pubs.acs.org/cen/whatstuff/stuff/8217kitty.html
http://www.coolquiz.com/trivia/explain/docs/kitty.asp
http://www.essortment.com/all/kittylitterwho_rixo.htm
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post #6 of 6 (permalink) Old 04-24-2008, 02:56 AM
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they are pretty close.


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