Aquarium Sand Bar Aeration Fish S Stone Oxygen Diffuser Bubble

The use of sand and stone material can make your aquarium fish outgas better. It can be used as a decorative object to add a landscape to your fish . This product can be cleaned and can be used repeatedly after cleaning. Condition:100% Brand New Item Type: Aquarium Sand Bar Material: PVC, Sandstone Optional Size: Small Size, Large Size Small Size Length: Approx. 11.7cmCelsius4.6in Large Size Length: Approx.  21.7cmCelsius8.5in Instructions for Use: 1: Please soak this product in water for 15 minutes before use 2: -term use, if dirt clogged, bubbles reduced, it can be taken out and washed repeatedly 3: It can be used with 2W and pumps (the larger the wattage of the pump, the better the output!) Product Function: Used in conjunction with pump and tube pump, more bubbles