ell what pump are you useing? you have to look at the pump to tell you what size outlet it has. you cant just use 1.5 in and the pump only has a 3/4 in outlet. the water will never make it to the tank.
once you figure out the size then yes you can get it at home depot.
A 46 gal bow front (Soft coral) reef tank with a 10 gal sump. And a 30 gal (SPS and Clam) reef tank hooked up to the sump of the 46 so they share water.