I don't think that I would make that claim. The tank planter could potentially lessen the shock of transplant for crypts by minimizing disturbance to the roots, but the plant would still be experiencing the other changes in environmental conditions that could trigger a melting response. Crypt melt generally isn't such a bad thing. Most all crypts will bounce back and grow again when their new conditions have stabilized, and they re-sprout with all new leaves.this would also limit the melting of crypts if you moved them right? Since the roots are in the same "substrate".