[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [APD] CO2 and Algae
- To: aquatic plants digest <aquatic-plants at actwin_com>
- Subject: Re: [APD] CO2 and Algae
- From: Thomas Love <tomlove at gmail_com>
- Date: Wed, 10 Feb 2010 14:28:34 +0200
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=sY2YAMaCysnJlX3it7Ze/lWDwIpraXoO5idIF97tKdA=; b=iRAXBygnkNK0D3te6+iI+TOUMO7s9+lleEHh67pOuTdrnN4R0+/cYctOUsbyoRRK8g Wr9I7sTBn/gO/Wwpi3soWJBfYhKZ7vKCBaFA5Bxqhm9DDp12z7VnTV5B+QIwbLJ7a+Vp MsTVLokVk61WDszHhgb4vAn+Dv37Zl2PdXTA4=
- Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=M8R/ka7Mo4To2sGOAk8nZXKae6QYk0lA3DSeBAjTfe0BIAzQFVHg9Exnesd5aAV19D LvNzwjQlaHwCEcR8/ZHFkwuttuljEzLPYy9YU8s+BpFrmnP8LVMNlY9qXKaaEokJg+db 8hbNg+cTe0G1+S6oYbNwbQwk7xECtBd7WoohY=
- In-reply-to: <bd1652dc1002092058r21d97ff6ve8cd035893fcdb14 at mail_gmail.com>
- List-help: <mailto:aquatic-plants-request@actwin.com?subject=help>
- List-id: aquatic plants digest <aquatic-plants.actwin.com>
- List-post: <mailto:aquatic-plants@actwin.com>
- List-subscribe: <http://mailman.actwin.com/mailman/listinfo/aquatic-plants>, <mailto:aquatic-plants-request@actwin.com?subject=subscribe>
- List-unsubscribe: <http://mailman.actwin.com/mailman/options/aquatic-plants>, <mailto:aquatic-plants-request@actwin.com?subject=unsubscribe>
- References: <4B708043_3050404 at mytriops.com> <20100209120921_49746.qmail at web3802.mail.bbt.yahoo.co.jp> <bd1652dc1002092058r21d97ff6ve8cd035893fcdb14 at mail_gmail.com>
Higher plants have roots. This is their enormous advantage over algae, and
it's the reason plants DO outcompete algae in the water column - they are
supported by nutrients from the substrate to which algae do not have
access.
Therefore, for the maxim "add more CO2" to be the best advice for an algae
sufferer, I think these together are necessary and sufficient conditions: -
1. A well-planted tank;
2. The plants having good root systems.
3. With a fertile substrate.
4. Good lighting.
I suspect most people with algae will likely be failing on all four counts,
so adding CO2 will not help them.
CO2's effect on the pH and phosphorous adsorption may assist but is unlikely
to be sufficient alone.
Macrophytes without strong root systems may still outcompete algae by having
more efficient nutrient transport and better storage systems, and in the
case of floating plants, by excluding light. But I suspect the equilibrium
in this case will not be so far in favour of plants that there will be
exclusively -- and good -- macrophyte growth.
Cheers
Thomas
_______________________________________________
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com
http://mailman.actwin.com/mailman/listinfo/aquatic-plants