The biOrb® Bubble Tube Guard is a clear cap which sits over the top of the bubble tube to prevent objects and fish from getting into the bubble tube. Holes in the cap allow bubbles to come out. Though it is rare that a fish would go into the bubble tube, some fish do like to squeeze themselves into tight spaces. The bubble tube guard prevents them from injuring themselves if this were to happen.
Prevents fish, shrimp and objects from getting into the bubble tube