Help! Epoxy reef safe for rock foam wall

I used West System Epoxy. It is normally used on boat hulls and is a high quality epoxy with a 20 min setup time. This epoxy is also what I used to put my plywood salt water tank together and coat the inside of the tank with. My tank has been in use for 20 years with no problems. It is a reef tank with both hard and soft corals.

Hope this helps,
Mark
 
Once it's set up it's safe for our reef tanks.

Here's our old 80gal cube with a foam rock wall sealed in epoxy



Close up of the back wall



From the other side



And the egg crate base for the foam rock wall
 
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