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Re: [AGA-Member] Possibilities of Sozo Haishoku

I have to completely disagree with Amano on this one. A substrate does not
run out, nutrients in a decent substrate with a high CEC will be constantly
replenished. I have one tank with a 7 plus year old substrate, the only
thing I have ever done with it is add root tabs (iron) and it's as healthy
and vital as it was when it first matured. I dose according to the EI
method, algae is not a problem, the fish are as healthy as any I've seen and
the plants require weekly pruning.

Maybe his substrates run out, but mine certainly haven't and quite frankly,
I've never heard such an idea before.
----- Original Message -----
From: "Livay Aviel-R51374" <Aviel.Livay@freescale.com>
To: <aga-member@thekrib.com>
Sent: Tuesday, July 12, 2005 12:20 AM
Subject: [AGA-Member] Possibilities of Sozo Haishoku

> Hi all,
> In the last TAG I enjoyed reading Takashi Amano's article "Possibilities
of Sozo Haishoku". It was actually interesting to know that this guy
actually battles algae on a daily basis.... :-)
> But one thing that he said is "news" for me - He said that there's a time
limit for an aquarium and at some point one has to replace the substrate and
"renew" the tank. I thought that a reasonable substrate runs out of
nutrients (except iron) in about a year or so however it should still absorb
some nutrients from the water and my impression was that water column is the
king as far as fertilization so no need to care so much about substrate
> Am I missing something?
> Aviel.
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