Pisces 20 Pack Air Stones Compatible with biOrb Aquarium Tank Filter Kits

Compatible With BiOrb - Pisces Pack of 20 Airstones Compatible with biOrb. High Quality materials that work effectively in the tank. Replace Often - Suitable replacement intended for biOrb filter systems. Recommended to replace ever 3-6 months Simple to Install - Easy to replace, simply remove the Bubble tube to access the airstone, replace the airstone and reposition Bubble Tube Essential Filtration - Diffuses air into water supply reducing noise and large bubbles. Essential to maintain oxygen saturation in your Tank Included - The set includes 20 replacement ceramic airstones for biOb Aquarium and tanks