Replacement Rubber connectors straight and elbow for Hiblow (and other) Linear Diaphragm Air Pumps Choose your Fitting:Modified Black Rubber (Lg end cut off at taper (Connecting 3/4" Air Pumps to 1/2" tubing) This convenient test pen makes

This convenient test pen makes it easy to do frequent testing for accurate

Maturing the K1 Media bio-media is important because a delicate eco-system is naturally developing for the bacteria involved in the nitrification process

CC220-1G TrueBlue Pond Dye

water resistant

Black) A00489 617750004891 15W UV Clarifier (220V

Replacement Rubber connectors straight and elbow for Hiblow (and other) Linear Diaphragm Air Pumps Choose your Fitting:Modified Black Rubber (Lg end cut off at taper (Connecting 3/4" Air Pumps to 1/2" tubing) This convenient test pen makesBetween 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