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#11 cylinder x2
Beneficial bacteria feed on excess nutrients in your pond water
Dropper bottle for accurate dispensing of test solution
This low back pressure diffuser gives maximum air flow from the air pump
Diameter of floating island: 16 inches
Atlantic Eco-Blox Water Matrix- LG (27x16x17.5) universal #11 cylinder x2The Atlantic Water Gardens Eco Blox Water Matrix provides water storage for pondless water features, bog filters, water harvesting and storm water reservoirs. Two or more Eco Blox can be locked together to fill part or all of a basin. Eco Blox hold more water in a smaller volume than gravel filled basins which saves labor, time and money. Featuring a 1 2" x 3 4" hole size, this water matrix block can be used with small gravel. One Eco Blox unit