Penn Plax Bubble Wall Diffuser 28″ Out of stock SKU: PPX34 Category: Aquarium Accessories Related products Ammorid Insert Aquaclear 500 / 110 Foam Base 12×15 (use 3 For 36″ Tank) (PKT 10) Carbon Insert Aquaclear 300 / 70 Ammorid Insert Aquaclear 150 / 30