Replacement Rubber connectors straight and elbow for Hiblow (and other) Linear Diaphragm Air Pumps Choose your Fitting:Black Rubber Straight Tapered Tube w/ Wire Clamps (Connecting Air Pumps to Fittings) Pond Force™ Bio-Blocks polyester sponge

Pond Force™ Bio-Blocks polyester sponge blocks provide an ideal environment for the cultivation of beneficial bacteria

2" Barb 90103 025033901032 1/4 HP 1

Macro-Zyme™ quickly releases billions of of facultative anaerobic bacteria (beneficial bacteria) & enzymes that work around the clock to clean

Great for illuminating fountains

This beneficial bacteria blend is instrumental to a proper spring opening and organic balance in ponds

Replacement Rubber connectors straight and elbow for Hiblow (and other) Linear Diaphragm Air Pumps Choose your Fitting:Black Rubber Straight Tapered Tube w/ Wire Clamps (Connecting Air Pumps to Fittings) Pond Force™ Bio-Blocks polyester spongeBetween these two connectors you can fit almost any air pump to common fittings and manifolds. The Black Rubber Elbow connection which comes with two wire hose clamps has the inside diameter of 18mm or 0. 71 inches. It fits Hiblow HP 20 through HP 120 air pumps and other models and brands with similar 18mm outside diameter connection points. These versatile rubber elbows are very elastic and can be clamped to fit 1 2" or 5 8" barbs and stretched to