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Soothing Shrimp 11-04-2012 04:52 PM

substrate question
 
So I know that some substrates that lower ph for cards are good for like 6-8 mo or so.

Would tripling or quadrupling the depth of the substrate increase the lifespan of it by a significant amount, or would it just be a waste of money?

AVN 11-04-2012 05:08 PM

I don't see any reason why it would increase the lifespan of it.

GeToChKn 11-04-2012 05:17 PM

Quote:

Originally Posted by AVN (Post 2067242)
I don't see any reason why it would increase the lifespan of it.

Why not? Most of these substrates work by releasing things to lower the pH like humic acid, tannis, etc and absorb things like gh/kh to help keep it stable, so why do you think say 20L of soil wouldn't last longer than 5L of soil? 20L would be able to release things for longer and absorb longer.


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