re: Why do roots exist?
To: Aquatic-Plants at actwin_com (Aquatic-Plants)
Subject: re: Why do roots exist?
From: "David W. Webb" <dwebb at ti_com>
Date: Tue, 18 Jun 1996 13:47:52 -0500
Conversation-Id: <BMSMTP83512331523a0206807 at dsks52_itg.ti.com>
>Dr. Dave wrote:
>The only nutrients which
>are needed in the water column are Mg, K, Ca and of course CO2. These
>consistent for several different types of rooted macrophytes on many
>different types of sediments.
This puts an interesting question up for me.
I'm looking into mixing up some PMDD in the near future to add to my nutrient
injection manifold. If I need to put the Mg, K, and Ca in the water column
instead of under the substrate, it seems that I would do well to add them to the
water column separately in carbonate forms. So where do you get hold of
Magnesium (bi)carbonate, or KHCO3? Should I be looking at other anions instead?
Perhaps just go with the sulfates, iodides, or the chlorides? I have a
feeling the hydroxides wouldn't be a very good idea.
David W. Webb
Enterprise Computing Provisioning
Texas Instruments Inc. Dallas, TX USA
(214) 575-3443 (voice) MSGID: DAWB
(214) 575-4853 (fax) Internet: dwebb at ti_com
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