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Re: [APD] Diy aquarium backgrounds; does cement stick on glass?

What kind of cement are you talking about? Portland cement.
Plastic (model airplane) cement? Acrylic solvent/cement?
Rubber cement?

I was refferring to the cement used in pavements etc that is mixed with water and sand and
sets hard- is that Portland? Although there is a product called Watercrete which is like cement but supposedly
can be used underwater to patch holes etc and even used in a pond where there are fish.

Cement sounded like the easiet thing to use- mix up and slap it on, let dry and add water
but as you've pointed out won't stick- also pH problems :O\.....

Few things have high adhesion to glass (except, it
sometimes seems, certain algae) but Portland cement would
adhere the worst of all those listed above. Glass is too
smooth and boht glass and portland cement are to rigid,
with diff expanson rates.

Even most "glues" and cements intended for plastics won't
bond well with glass and don't hold up if submerged for
prolonged periods of time.

Of the rigid adhesives that would hold up under water for
prolonged periods, epoxy (in the color of your choice)
would probably adhere and hold up best. Silicone rubber
adheres reasonably well, but it turns whitish, so unless
you got 100% coverage with the sand, it might show through
in an annoying way.

Epoxy sounds like fun, I'd buy the stuff from AquaZoo(?) if it
were available here.

I think that, if you're going to go invest the time and
energy into creating a custom background, then put it on a
good substrate, which glass isn't.

Good luck, good fun, Scott H.

thanks for the info,


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