Key Features Replacement centre Bubble Tube Fits the Biorb 60L Classic and Halo and the BiUbe 35L Made of strong plastic Genuine Oase BiOrb Part - Replacement Bubble Tube to for the BiOrb 60L Classic and Halo and the iUbe 35L If you find yourself in need of replacing your BiOrb centre bubble tube then look no further. Supplied with the base, this tube will simply fit in with ease