Ah gotcha. Looks ok to me.

Is that your thermostat probe in the tub? If so, it's not a very safe place to put it. It needs to be secured to the heat pad(sandwiched in between heat pad and tub is best). If it gets moved or water gets spilled on it, it could easily allow the heat pad to spike and get too hot.

If it's a thermometer probe, don't mind me