[Coral-List] Artificial reef - cement or metallic /w electrical stimulation?

Damien Beri beridl at g.cofc.edu
Sun Jul 9 17:45:10 EDT 2017

Bio rock:

Does the electrical field generated by the anode and cathode inside the reef frame, not raise the pH across the surface of the corals thus making it easier and less costly for the CCM to sequester bicarbonate into the calicoblastic cells of the coral, and force the precipitate of CaCO3?

Sent from my iPhone

> On Jul 9, 2017, at 7:20 AM, Bill Allison <allison.billiam at gmail.com> wrote:
> Hi Philippe,
> You might want to consider:
> 1. Production of both concrete (reef balls) and steel (electro reef) have
> large carbon footprints.
> Transport of materials and transport and emplacement of the structures also
> produce carbon dioxide and heat.
> I have not seen a cost-benefit incorporating these considerations.
> 2. Re. electric current approach.
> A negative current will draw cations and a positive current will draw
> anions.
> Presumably the Ca2+ and Mg2+ are of interest but there are other cations
> out there.
> The area becomes supersaturated with cations and whatever is in the
> vicinity will be precipitated.
> The amorphous mass formed is mostly brucite and unlikely to crystalize.
> Good luck,
> Bill
>> On Thu, Jul 6, 2017 at 7:24 AM, Philippe Sanchez <pipobs at gmail.com> wrote:
>> Hi all,
>> I've been looking at some artificial reef projects, specifically in the
>> UAE. Reef balls seem to be quite popular. A friend recently told me about
>> increasing growth and survival rate by applying a small electrical current
>> (I'd never heard of this before). I read the paper (Goreau, T.J. 2014) and
>> it seems very promising. I wondered why this wasn't more well known??
>> Perhaps it's too expensive for people to set up?
>> Does anyone here have any experience working with such a project or can
>> give some insight on the pros and cons of this innovative method?
>> Thanks!
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> -- 
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> it is useful."
> - Ophuls, 1977
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> Look on my Works, ye Mighty, and despair!"
> - Shelly
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