[Coral-List] Best Non-Toxic Marine Epoxy?

Greg Challenger GChallenger at polarisappliedsciences.com
Wed Mar 11 18:57:18 EDT 2015

We use cement in the new days too.   But the two part epoxy all-fix works on small jobs.  

Sent from my iPhone

> On Mar 11, 2015, at 5:45 AM, "Dennis Hubbard" <dennis.hubbard at oberlin.edu> wrote:
> In the old days, we used Portland type II marine cement. If you mix it with
> coral sand, you have something that is a lot closer to the coral's make-up
> than any epoxy will ever be. In a couple of years, the coral grows over the
> plug and all evidence is gone. If you add moulding plater to it, it makes a
> nice and firm glob that you can work into the hole. You want to make sure
> there are no ways for bioeroders to get into the hole from another
> direction or they will eat the colony from the inside rapidly.
> I remember Gene Shinn telling me that when they were working in protected
> areas they had to drill another plug from the side of the coral, glue that
> into the "real" hole and then plug the one down lower and out of site. The
> problem was that the corals on the lower sides apparently had either a
> different density or different group of zoox and the color didn't match.
> I'm sure that Gene can fill in the gaps and fix the errors in my story.
> Best,
> Dennis
> On Tue, Mar 10, 2015 at 12:22 PM, Hannah Aichelman <
> hannahaichelman at gmail.com> wrote:
>> Hi Coral List,
>> We are trying to find the best non-toxic marine epoxy that will be used to
>> seal core plugs from recently drilled coral colonies (Siderastrea siderea
>> and Pseudodiploria strigosa). Any ideas for the best options? We are trying
>> not to use Z-SPAR because of potential toxicity to the coral.
>> Thanks!
>> Hannah
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> -- 
> Dennis Hubbard
> Chair, Dept of Geology-Oberlin College Oberlin OH 44074
> (440) 775-8346
> * "When you get on the wrong train.... every stop is the wrong stop"*
> Benjamin Stein: "*Ludes, A Ballad of the Drug and the Dream*"
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