12

Crystal Flash in front of the lower-right door. Place the Power Bomb just as the slow crab turns the corner to go up the the top of the room. This will avoid killing the fast crab and give it just enough time to come hit Samus from above.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "direct",
    "morphed": true,
    "mobility": "immobile"
  }
}

Requires:

{
  "or": [
    "h_artificialMorphSpringBall",
    {
      "and": [
        "Gravity",
        "h_artificialMorphBombs"
      ]
    }
  ]
}
"h_artificialMorphComplexRModeCrystalFlashInterrupt"
{
  "ammo": {
    "type": "Missile",
    "count": 10
  }
}
{
  "ammo": {
    "type": "Super",
    "count": 10
  }
}
{
  "ammo": {
    "type": "PowerBomb",
    "count": 5
  }
}
{
  "or": [
    "h_fullEnemyDamageReduction",
    {
      "and": [
        "h_partialEnemyDamageReduction",
        {
          "resourceAtMost": [
            {
              "type": "RegularEnergy",
              "count": 39
            }
          ]
        }
      ]
    },
    {
      "and": [
        {
          "resourceCapacity": [
            {
              "type": "RegularEnergy",
              "count": 199
            }
          ]
        },
        {
          "resourceCapacity": [
            {
              "type": "ReserveEnergy",
              "count": 199
            }
          ]
        }
      ]
    }
  ]
}

Dev note: With an immobile setup, the timing is a bit tighter but not too bad, and the Power Bomb movement option won't work. This could be done with more tanks in order to end with more Energy, but this is already a good farming room.