WATER-ABSORBING POLYMER Aadvanced Water Management's Hydrozone is a water-absorbing polymer that is released into the sod's rootzone to increase the water-holding capacity. The permanent, water-absorbing soil amendment is designed to absorb a maximum of 40 times its weight in water and release it to the plants as needed. Its limited expansion capacity helps to conserve water as well as absorb and retain fertilizers. Aadvanced Water Management