We are now stocking those larger diffuser type stones, these are really superb and from the same Japanese stable as those listed on this page, these give an excellent air flow and one placed strategically on the bottom of the pond or tank will work wonders, they are both long lasting and very strong.
132 mm - 4 mm Hosetail
200 mm - 8 mm Hosetail
They come in two sizes, the larger model is 200mm diameter and the smaller model is 132mm diameter, these will make a very useful addition to any pond or tank air system, and make a superb present for the Aquatic enthusiast.
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132 mm Diameter Flat Round Ceramic Airstones (4 mm)