{
  "type": "minecraft:block_column",
  "config": {
    "allowed_placement": {
      "type": "minecraft:matching_blocks",
      "blocks": "minecraft:water"
    },
    "direction": "up",
    "layers": [
      {
        "height": {
          "type": "minecraft:weighted_list",
          "distribution": [
            {
              "data": {
                "type": "minecraft:uniform",
                  "max_inclusive": 29,
                  "min_inclusive": 5
              },
              "weight": 2
            },
            {
              "data": {
                "type": "minecraft:uniform",
                  "max_inclusive": 6,
                  "min_inclusive": 1
              },
              "weight": 3
            },
            {
              "data": {
                "type": "minecraft:uniform",
                  "max_inclusive": 10,
                  "min_inclusive": 2
              },
              "weight": 10
            }
          ]
        },
        "provider": {
          "type": "minecraft:simple_state_provider",
          "state": {
            "Name": "minecraft:kelp_plant"
          }
        }
      },
      {
        "height": 1,
        "provider": {
          "type": "minecraft:simple_state_provider",
          "state": {
            "Name": "minecraft:kelp",
            "Properties": {
              "age": "25"
            }
          }
        }
      }
    ],
    "prioritize_tip": true
  }
}