Just in – more beer gear! This Diatomaceous Earth (DE for short) filter is good for about 350 gallons per hour. DE filters are versatile since they can work with a wide range of filter material. By varying the material used, we can filter some beers to brilliant clarity, while with others we can leave in some haze… depending on what looks and tastes best for that beer. Sometimes the hazy stuff is also part of the flavor… other times it needs to go!