7" Round Aluminum Oxide Airstones Union They are inexpensive to operate

They are inexpensive to operate

we hear good comments from barley straw users

pebble by pebble

resulting in effective dewatering of the contained material

Mix at a rate of 10 gram per liter of water

7" Round Aluminum Oxide Airstones Union They are inexpensive to operateDescription Unlike the standard silica airstones, these can be cleaned time and time again without wearing down. These airstones are made of aluminum oxide, the same material used for grinding stones which makes them extremely durable. With increased durability, there has been nothing sacrificed in the quality of aeration delivered to your pond, tank or lagoon. These stones have been specifically designed to work well in an earth bottom pond. The 7