PERMA GUARD DIATOMACEOUS EARTH 10LB - ORGANIC RO The Coarse is about 1/8

The Coarse is about 1/8 to 1/4 in

soil and soilless applications

There is no real shelf life to speak of if kept dry or in liquid concentrate form

2 weighing modes: g/oz

Ideal for fast-growing and heavy feeding plants

PERMA GUARD DIATOMACEOUS EARTH 10LB - ORGANIC RO The Coarse is about 1/8Diatomaceous Earth packaged under our FOSSIL SHELL FLOUR label comes from an extremely pure fresh water deposit of the diatom Aulacoseira from a deposit created in the Miocene epoch. Why is this diatom so special? Its shell is made of amorphous silica. Its shape and hardness are important to how it works. Its hardness keeps it from dissolving in liquid. The holes along the diatoms wall allow it to absorb moisture, hence its use as an anti caking