fishfreek: The sand in the construction area is "play" sand. The quickrete brand says, washed, cleaned, toxic free, safe for kids, etc. I am not sure about landscaping use though. My father in law runs a landscaping business and we get play sand for our kids sandbox from him but it is brown sand.
I need to see if he can order anything different, I guess.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,