I was just curious since i was at the store and this guy said sand scratches acrylic tanks. So I wa splanning to put about 2 inches of sand in the bottom and I also use play sand from home depot and rinse it like a million times. this is going to be my main tank its a 240 but i dont want it all scratched up eventuallly

I don't have acrylic, but am still VERY careful with sand vs. glass.