Recommend an Epoxy for gluing sand to acrylic

[hexbasher]

I want to glue some dry sand to about 2 square feet worth of acrylic (around some glued LR rubble, glued with whatever fragging epoxy i have on hand at the time)

anything good? I did searches and found guys building foam walls, but what they were using stuff i cant find in Canada all that well

so if anyone knows some product (or even better a local supplier in the lowermainland) that would be awesome