Seats
There is a sphere in the bottom of the tub making every seat in the tub equal and ergonomic. It is as comfortable as a nice chaise longue.
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Water temperature
What happens in the spiral will happen in the tub: hot water ascends. To heat efficiently you need to stir the water once in a while. When the water gets too hot, you can allow the fire to burn slower or simply spin the basket up within the spiral, thus regulating the heating by exposing fewer coils to the heat of the fire. The higher the basket, the lower the circulation. This option preserves the ambiance of the flames.
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Children and the Dutchtub
The Dutchtub is as dangerous as any other pool or bbq. The water is wet and the fire is hot so caution must be taken whenever children are using the Dutchtub. But the spiral doesn’t get red hot. It cools itself because of the water circulation.


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Roof terrace & docks
When the Dutchtub is placed on a terrace, dock or platform check your construction with an official contractor. The weight of the Dutchtub can reach 1400 kg / 3000 lbs, a small platform under the tub can spread the total weight on more square meters than just the four legs of the tub. 
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Cleaning
The tub can be cleaned with a towel and some mild cleaner like Simple Green. Small scratches can be polished and buffed just like a car. After every party it’s recommended to flush the spiral with clean water. If you do have a turbo use it to flush the spiral.
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Hygiene
The water can be treated with salts, soaps, hydrogen peroxide, and small amounts of shock treatment (contact your local pool supplier), though using chemically treated water next to a wood fire is not our way of enjoying the Dutchtub. Non chemically treated water can be used again to water your garden or recycled into a grey water system (contact us for project details). We recommend emptying the tub after each time of use.  
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Durability
The spiral is made of chemical-  and element-proof stainless steel, this is the absolute best there is (also used for wind turbines at sea). The polyfiber can be compared with a sailboat. It can stand really cold winters and stay outdoor all year around. And some boats last 50 years…
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During the winter
In the winter it’s great to take a nice warm soak but it is not recommended to keep the water in the tub if temperatures drop below freezing. The water inside can freeze and frozen water expands: this could damage the spiral.   
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