laterite? - Page 2
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Specific Aspects of a Planted Tank > Substrate


Reply
 
Thread Tools Display Modes
Old 01-21-2014, 09:22 PM   #16
lochaber
Wannabe Guru
 
lochaber's Avatar
 
PTrader: (1/100%)
Join Date: Jan 2012
Location: Oakland, CA
Posts: 1,987
Default

Quote:
Originally Posted by Hoppy View Post
Laterite or lateritic soils are not actually clay, as I understand the meaning of the terms. As I understand it laterite is very old type of clay, which has weathered from rocks, and been enriched with iron and aluminum minerals, and is very lacking in any nutrients for plants. Ordinary clay is also derived from rocks, so I'm not totally clear on what the differences are.

I think this is right. I get the impression that a lot of people are equating laterite with red clay, which isn't quite true.

Like Hoppy said up above, I remember a big fuss about laterite in the mid 90's or so, and that was before there were many (any?) commercially available plant-specific substrates, and a lot of people were just trying to grow plants in regular aquarium gravel.

Laterite is a heavily weathered soil found in tropical areas, pretty much everything that can be broken down or dissolved has been broken down and dissolved, so what is left is mostly iron and aluminum oxides. I think it's the combination of iron and being found in tropical areas is why it gained popularity in the aquarium hobbies (pure speculation on my part). Clays tend to be an aluminosilicate, and are usually a product of other silicates (micas, feldspars, etc.) weathering.

I also agree that if you go with a dirted layer in your substrate, or include iron in your root tabs or dosing regimen, it should be fine. Otherwise, I don't imagine it would be too harmful, but I think the benefits would be nearly negligible. (although, Walstad claimed a tank with both dirt and laterite showed symptoms of iron poisoning, so...)
lochaber is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 10:35 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012