thanks, i take it that you mean the big tank?How did you make that background? It looks really awesome! I never understood Why people don't put them on their tanks it makes them look at whole not nicer!
sorry man been a 4 years already. Im not sure anyway but i thought all epoxy are safe when they are hard. Just a matter of putting enough on it so that the cement doenst get to the water. And then glue it with pondglue to the back.What kind of cement did you use? I'm not aware of any blends that don't contain lime, which should raise the pH. Or is the epoxy coating enough of a barrier to mitigate that? What kind of epoxy were you using? Does it cure clear and stay that way?