The tube will break once Samus moves after exiting G-Mode or when the Power Bomb finishes detonating, whichever is later. Be sure not to overload PLMs with the camera scroll blocks which are next to the tube. It is possible to exit G-Mode before the Power Bomb goes off to be safe.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "any",
    "morphed": true
  },
  "comesThroughToilet": "any"
}

Requires:

"h_canArtificialMorphPowerBomb"

Clears obstacles: f_MaridiaTubeBroken