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Old 03-06-2020, 01:27 PM   #5
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Join Date: Dec 2008
Location: Sunny Scotland
Posts: 21,510

I also wrap around a couple of those foam exercise/yoga mats first then a hot water tank jacket. Then the insulation blocks that you can see in one of those images and duvets over the top. I have a wireless temperature+humidity measurer dangling from the inside of the lid of the tub with the readings displayed on the device in my house.
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