I built a wall of paste tanks around some synthetic crystalline to allow it to grow. See screenshot. Tundrabugs are still able to pass through these "walls" and get trapped inside.
This brings up another issue.... the Zolarg have no building like a wall for doing things like this so expensive buildings must be used instead.
version: 0.45
platform: Win10
My YouTube tutorial series: https://www.youtube.com/watch?v=Tfw_-RB6D-Q&list=PLHw_EJXYsdHgSUAzwqvtfgpoBDm16flcP