Degasification

Take the gas cylinder to the emerol cluster at the top of the Library of Mekalia. While near the crystal cluster, use the cylinder to spray poisonous gas onto the crystal. When done, return to Tam at the Skyside Bunker. - Poison the Emerol Cluster - Empty Poison Gas Cylinder (0/1) - Communication Crystal (1/1)

Through the communication crystal, Tam continues to speak. "Now that you have the gas cylinder, take it to the top of the Library." "There's a large emerol cluster there that Lieutenant Amac Boral uses to hone his psionic powers. Spray gas from the cylinder onto the crystal, and you should be able to dull its powers." "When you have done this, return to me in person."