Copper toxicity

• To: Aquatic plants list <aquatic-plants at actwin_com>
• Subject: Copper toxicity
• From: Cynthia Powers <cyn at metronet_com>
• Date: Thu, 27 Jun 1996 10:35:53 -0500 (CDT)

---------- Forwarded message ----------
Date: Thu, 27 Jun 1996 12:47:01 +0000
From: "Simon Wicker" <simonw at mailmac_mill.co.uk>
Subject: copper toxicity
To: aquatic-plants at actwin_com

According to the latest printing of 'The optimum aqarium' many elements have
different levels of toxicity according to whether they are organic or
an-organic. For this reason Duplaplant 24 contains a certain amount of free
chelating agents (EDTA) to bind to copper, etc, reducing their toxic effects.
As an example they quote on page 112 that chelated copper has fatal effects
around 10 mg/l as opposed to 0.1 mg/l for un-chelated copper. Keep adding the
Duplaplant!

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