Grow speed way too fast through stages

I tried to set the "Self Watering Grow Light" to Vanilla speeds so I placed 900 seconds in the config. But with these config settings below the light grows the hemp in like 10 seconds, why does it not take 900 seconds like I have placed in the config? I have attached my config for trouble shooting the problem. How can I make the visual plant growth normal vanilla speed?

Can we please have it so the visual change of plant growth is the same speed as vanilla as it currently goes way too fast. Thank you kindly
It also says water happyness always at 0% where my vanila light and watering setup says 22% can we have it follow this normal methods pls?

The COOLEST part about farming is watching your plants move through the stages, but this seems to go through staging SUPER way too fast. Could we please have a way for the stages for it to move through at normal speed?

    "3723896699": {
      "GrowthIntervalInSeconds": 900.0,
      "GrowthRadius": 3.0,
      "Light Color (blue,brown,cyan,green,pink,purple,red,turquoise,white,yellow": "green",
      "Name": "Self Watering Grow Light",
      "RequireWaterToGrow": false

GrowLights.json