GC Tek PoliGlassBead XStream Polishing Filters Laguna this biological media has a

this biological media has a dimpled surface

as opposed to a lever arm and ball

CrystalClear® AlgaeOff® Dosage Rates Surface Area (In Square Feet) AlgaeOff® 25 – 50 Square Feet 1/4 cup 51 – 100 Square Feet 1/2 cup 101 – 150 Square Feet 3/4 cup 151 – 200 Square Feet 1 cup 201 – 250 Square Feet 1-1/2 cups

the bacteria draw in dissolved waste (ammonia and nitrite) and oxygen to convert the waste into nitrate

GC Tek PoliGlassBead XStream Polishing Filters Laguna this biological media has aShips directly from the manufacturer, typically in 1 2 weeks. Ships freight, which extends shipping time and requires you to be present at delivery. Trucking company will call to schedule appointment. The PoliGlassBead XStream polishing filters are specifically designed for extreme conditions where extra polishing is required runoff from flooding, fish spawning, and other extraneous conditions. This filter is designed for pond keepers who want a pond