You should see my garage, looks like a cocaine factory! I might sweep up the dust and return it to Red Coral for a credit!
I can't avoid all the dust but am blowing each piece off with a compressor before taking them downstairs to be siliconed in place. I think I will give things a good vacuum and maybe a fresh water rinse before the $150 of salt goes in.
Planning on 3 or 4 tiers in the sand bed, might look pretty cool.