I cleaned 100 pounds of black diamond blasting sand and put it in my empty aquarium( I ran out of daylight to clean the other 50lbs). I spread everything out and now the sand seems very hard. My question is will me filling up the tank loosen up the sand? I know i am supposed to aggitate the sand so I don't get dead spots in it and i was going to use MTS. It seems like the sand would be to hard for them to burrow through. Any help would be great thanks everyone.