I bought this product because I wanted to build a freshwater aquarium out of some live plants. I have a 90-gallon aquarium with an area of 18 x 48 inches. The rock will be here soon, and it was expected a few days ago. Ever since I ordered a 50-pound bag, I imagined it would get bigger. This is because of my own preconceived ideas, not those of the seller. During the protest, I grabbed my wife's kitchen spoon and went to the back porch to wash the stones. This is the dirtiest aquarium rock I've ever bought, and unless you want muddy tank water (the instructions on the bag also tell you to rinse), you need to rinse thoroughly. The rocks range in size from what I think is small to medium, mixing a few larger rocks. Anyone looking for a natural appearance in their aquarium will be satisfied with the color of the rocks, which range from transparent to a variety of colors, including red, white, brown and black (natural colors). These colors are combined to give the overall color of light brown. I included a picture that did not make the product fair. I already have about 25 pounds of gravel, I've mixed it (75 pounds in total), and give me a 1.5-inch gravel bed. If you have a jar of my size and just want a light lid for your jar, then a bag might be good. I would suggest two bags, but maybe more if you want a planted tank (I'll get more gravel). However, this is only a suggestion, because the setting of the tank depends largely on the individual.