I used clean saltwater, a 5 gallon bucket, and maybe 3 or 4 scoops of sand at a time. I scooped the sand into the bottom of the bucket, covered it with saltwater, and stirred to get the water cloudy...then dumped the water and repeated until the water was almost clear (it will never be 100% clear as the sand will stay suspended for a few minutes...you should be able to tell the difference). I then repeated this with the remainder of the sand and put the clean sand into a temporary container with more fresh saltwater until I was ready to set the 125 up.