I have thought it over, and I now think I will choose sand for my new 55 gallon tank. I am getting it tomorrow, and I need to know how much I need for that size of a tank. And I can buy play sand from Walmart right?
Two days ago I changed my tank set-up to sand. From Home Depot I bought a 50lbs bag of white silica sand for $7.49. This was more than enough to give me a 1-2 inch layer of sand.