Epoxy floor coatings for tanks?

  • We are currently upgrading MFK. thanks! -neo

kzimmerman

Piranha
MFK Member
Mar 18, 2009
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delmar md
I have a lot of epoxy floor coating, it is the neogard 70714/70715 system. Anybody ever use this stuff to seal tanks up? I'm going to start my plywood tank soon, And I mixed up a small sample. It took overnight for pre-cure, Data sheets on the products suggest 7 day's till post cure is complete. It is a very smooth finish, the epoxy itself is white, but I put some coloring in half of the sample to see how it took. It's viscosity is very similar to latex paint, maybe a touch bit thicker. It appears to have adhered to the plywood piece that I used for the sample rather well. Any thoughts?
 
Have you try contacting the manufacturer to see if this product would be ideal for such a project. I think a major concern would be if it would leach any harmful chemicals into the water.
 
Yeah, I just looked into it... its listed as a High performance epoxy primer...nothing in the datasheet says its potable water safe.. much less fish safe. And the fact that its listed as a primer tells me that it probably has limitations if used by itself.
 
I'm not sure why it say's primer, it is definately not a primer.
 
Hello; Some of the substrate sold for use in aquariums has an epoxy coating. It comes in various colors. I also suspect that the stuff that seals the submersible heaters is a plug of epoxy. This would seem to indicate that some epoxies are fish safe???
 
Many epoxies are fish safe, most epoxies cure into a chemically inert plastic. Some have different properties, Ie high chemical resistance, high bond strength, Uv ray protection. My biggest concern with this epoxy is if it has any algaecide or mold inhibiting compounds added, as this could leech into the tank water. The sample I made up is showing good pysical properties for this application, and I may need to build a small tank to test it out thouroughly. Boy I can't spell until I get enough coffee!
 
I've looked into this product for a future plywood tank. Here's an email reply I got from the manufacturer:

"Thank you for contacting us.



Your project sounds like a very ambitious one. I'm happy to say that I do believe that Durabak will work for your project. Normally we recommend using 2 coats of Durabak for most applications. However, for waterproofing like your project we would recommend applying 4 coats. We would also recommend using the smooth version of Durabak.


Once fully cured (usually 3-4 days depending on temperature and humidity) Durabak does not leach out any chemicals. It should be fine for your fish. Over the years, Durabak has indeed been used on some ponds.


If you have any further questions please do not hesitate to contact us again.


Good Luck,


Jacob Strauss
The Durabak Depot Team
www.DurabakDepot.com
888-613-4501
"
 
^ Unfortunately, that is not the same thing, that is a single component polyurethane. The product I'm using is a two part epoxy based system.
 
^ Unfortunately, that is not the same thing, that is a single component polyurethane. The product I'm using is a two part epoxy based system.

I know. I was just giving you an alternative option
 
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