They live and move around on a film of water. 2. Moisture content in compost pile should be 50%â60% (moist as a wrung-out sponge) a) First consider the moisture of the materials to be composted b) Add water as pile is built, watering dry layers especially.hey live and move around on a film of water. 2. Moisture content in compost pile should be 50%â60% (moist as a wrung-out sponge) a) First consider the moisture of the materials to be composted b) Add water as pile is built, watering dry layers especially.
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