U.S. Gypsum HYDROSTONE 50 lbs. Bag | Hydro-Stone
Soaking Sift or strew HYDRO-STONE Gypsum Cement into water slowly and evenly. Do not drop handfuls of HYDRO-STONE Gypsum Cement directly into the water. Allow soaking for 1-2 minutes. HYDRO-STONE Gypsum Cement should be fully dispersed in the water prior to mixing. Small batches require less soaking than large batches.