You probably can. I would rinse it really well. Then put it in the tank in a way that you are not dumping it through the water.
One way is to put the sand in a cup and pour it out where you want it, then spread it that last bit.
Another way is to use a tube, like a section of PVC pipe to guide the sand to where you want it. Pouring it through the tube a little at a time.
Stop at any point the water is getting cloudy, and add more after it clears.
Thank you very much for the advice. I really appreciate it