X3 UK Air Stone for Fish Tank Curtain Bubble Bar Aquarium 100mm Our Blue Bubble Log Air Stones are made from ore sand stone and would make a great addition to your aquarium. These air stones are long and flat which gives them lots of surface area to create bubbles on. The bubbles produced along the length of the air stone are decorative in appearance and they give the visual effect of a wall of bubbles. Placing them under some substrate creates a different type of bubble which looks wonderful as it appears magically from the substrate and wibble wobbles its way up to the surface. This listing is for 10cm long blue bubble log air stone, it has an inlet that fits 4mm hose.
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