Ordered what was said to be 50lbs but received 40lb bag. Bag says it treats 50 gallons not 50 lbs of sand
This is my first time using a sand substrate, as I've always used the basic gravel. I must say that I am totally amazing. I really like the sand. I washed it about 4 times and then it was good to go. No cloudy water what so ever!!!! Also, I added this sand to an established aquarium with no issues.