Product Description: Item Type:Aquarium Substrate Material:Gravel Color:Black Pattern:Solid Weight:100g Features: 1.Long fertility: with rich trace elements, this aquarium gravel has a longer life than common gravel and it is really economic. 2.Easy Method: it will never become powder and muddy water. You do not need to wash it and it can be put in the fish tank directly to be used. 3.Economic Friendly: the nutrient composition is in the gravel and can send out continuously which will not pollute the water. 4.High Stability: it can be adjustable and the size of the grain is moderate. The gravel is not decomposed easily. 5.Senior Color: mysterious solid black can make your fish tank more attractive. Package Include: 1 x Bag(100g Aquarium Substrate) Notes: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little difference from what you expect, please allow it. Brand: OCHINE Manufacturer: OCHINE Color: Solid Black