Just to let you know about your hot tub. So, about 30 minutes before you are ready to get in and enjoy it, if you gently life the front of the lid a little way , you will see the dials, you can then increase the temperature to 39 degrees and pop the jets on ready, then close the lid so that the water heats up and will be ready for when you want it.
It’s important to keep the lid down when you are not using it to keep the heat in and also as the wind can sometimes blow the lid open little bits of the tree, leaves, twigs and the soil on the leaves can drop in to the water, with the wind. Also, if it is ok to turn the temperature down again when you have finished that would be great as it does not take long to heat up when you want to enjoy it again.