Wellis Swim Spa Danube W-Flow

Features & Functionality

Spa Shell Options

Sterling Silver
Sterling Silver

Cabinet Options

2 Sitting Places + Swim Area
24 Massage Jets + W-Flow System
UV-C + Ozone Sanitization
14′ 9″ × 7′ 8″ × 4′ 9″

Luxurius Comfort



Bring your spa’s capabilities to a whole new level when you enjoy the relaxing effects of aromatic infusions. With your Wellis spa, adding the power of your favorite fragrances to your hydrotherapy experience is easy and allows you to tailor every soak to suit your emotional and wellness needs.


Exclusive color therapy lighting is built into the sidewall of the hot tub, directly under the water surface, consisting of 10-20 LEDs that are aligned with the standard underwater lighting. Color therapy lighting is also installed along the rim and in the side panel of the hot tub, which can be controlled separately from the inner lighting.


Fountain jets triple the fun and design in your Wellis spa. Enjoy the relaxing sounds of water bouncing on water or make family fun using the jets for games and more.

Swim Spa

The Wellis Danube W-Flow provides exceptional solutions. Featuring two sitting places and a swimming area, this swim spa provides the best of relaxation and working out. A side-mounted filter housing is placed at the end of the swimming area so that the floating area is wider than other models. Immersive visuals include two illuminated side fountain jets. The W-Flow system offers specific training solutions with customizable swim features. Also available with the semi-cabinet design which makes it possible to install the spa halfway into the ground without any concrete preparation needed.

W-Flow System

In a traditional swim spa, the user has to switch on/off the pumps manually to find the proper water flow which fits their fitness level. The Rio Grande swim spa is equipped with brand new swim software. Combined with the new W-flow system, the new Rio Grande becomes a professional training appliance.

The user can choose six-speed levels from the slowest, most comfortable “floating” to the hardest exercise. Similar to a modern treadmill, you can predefine the swimming speeds one after another, so you can insert slower stages between the swimming sprints.

Aqua Fitness

Thanks to the several available training sessions, the swim spa is suitable for professional swimmers and beginners alike. You can experience endless swimming with this new fitness machine. It’s like having your own coach to watch over you. The training session can be customized by setting flow intensities, durations, and color indicators. Before choosing a training drill, we recommend adjusting the parameters. Choose from 6 different parameters ranging from custom to cardio all tailored to your preferences.

Water Purification

All Wellis spas use a multi-stage filtration and sanitation system that ensures crystal clear, safe bathing water with the minimum of user input. The process starts with special antimicrobial cartridge filters. Once the spa water has been filtered, it passes through the heater and then the eco-circulation pump. Next, it is passed through a UV-C water sanitizer lamp and/or ozone if equipped.

UV-C rays have long been used for the disinfection of water in community pools since they are hypoallergenic and kill almost 100% of the viruses and bacteria found in water. Unfortunately, the devices used in community swimming pools are heavy and take up too much space for use in hot tubs. The UV-C system from Wellis revolutionizes the sanitizing of hot tub water.

Massage Jets

Wellis massage jets were designed to ensure an optimal hydro massage experience in any situation. Each jet type was carefully selected for the different pools to ensure hydro massages unique to each seat. The massage jets can be opened and closed individually, which allows concentrating hydro massage more precisely, to the specific part of the body.

Modern Relaxation

AquaSoul Sound System

AquaSoul Sound System

The watertight elements installed in the Wellis AquaSoul™ sound system are of the latest design and highest quality.
Any smart device equipped with a Bluetooth connection – e.g. a mobile phone, tablet or laptop – can be connected to the AquaSoul™ sound system.
In.Touch 2 Smartphone App

In.Touch 2 Smartphone App

Provides remote access via connection to your home’s Wi-Fi network. Wellis Service can notify you when there is an error received from your hot tub and troubleshoot with access from the owner. Keep a history of your hot tub’s operation and fix software errors remotely within just a few seconds avoiding service visits.
SmartTouch Control Panel

SmartTouch Control Panel

A multi-function color touch-screen hot tub control panel without buttons, keyboards, and covers, the new Wellis control panel is fun to use and easy to learn. It features a wheel menu selection, notification icons, Wi-Fi for remote hot tub control and music playback from other devices, and simple to navigate water treatment options.
UV-C Water Sanitization

UV-C Water Sanitization

UV-C rays are hypoallergenic and kill almost 100% of the viruses and bacteria found in water. The UV-C system from Wellis is lightweight, compact, and very effective. With a negligible amount of power consumption and quiet, safe, and automatic operation, it treats the water in the spa several times a day for crystal clear bathwater while reducing the need for use of water treatment agents.

Designed for Efficiency

Energy Efficient Water Circulation

Energy Efficient Water Circulation

The W-EC circulation pump is a very low power consumption (190W/h) device which is available for all Wellis hot tubs as an option. The low power consumption (40% lower energy costs than a typical circulation pump), long lifespan, and almost silent running make this a very green and cost-effective option to consider.

WPS Cabinet Frame

WPS Cabinet Frame

No more sanding, oiling, and messy maintenance of a traditional timber cabinet. Wellis spa cabinets are made of a UV-resistant polymer material, that looks as good as real wood but is entirely maintenance-free. Immortality for the spa cabinet’s frame! The special polymer ensures exceptional stability and life for the Spa’s structural frame – protecting and extending the life of your investment even further.

Thermal Cover

Thermal Cover

Wellis manufactures its own covers to ensure consistent quality and the highest level of thermal insulation effectiveness. This helps to keep your energy costs to a minimum. The covers include features like a full-length hinge buffer seal, internal vapor seal, and a marine-grade UV-resistant outer cover. The top surface slopes like a house roof so that rain can easily run off.


Increase the time you spend in your tub – without a hot water refill while also conserving energy. The Wellis shell reinforcement has excellent sound insulation properties and significantly reduces noise intensity through the tub wall – so the neighbors won’t be bothered if you feel like taking a refreshing massage in the middle of the night.

1. Acrilyc outer surface with antimicrobial treatment.
2. ABS polymer layer to further increase impact resistance and strength.
3. Medium density robotically applied polyurethane for added strength plus acoustic and thermal insulation.



The insulated one-piece molded floor pan forms the foundation upon which your spa rests. The pan sides extend upwards and form a moisture and insect-proof barrier to protect the spa’s structure from the detrimental effects of damp ground.
The reflective barrier insulation system extends across the floor pan to prevent valuable heat from being wasted.


Proper insulation is just as important for hot tubs as it is for residential houses. The inside of your Wellis spa cabinet – down to the floor and on the side walls – is covered with a thick layer of polyfoam insulation, while the shell is coated with several layers of polyurethane foam which is well known for its excellent insulation properties. The heat from the pumps and the heaters is reflected by the foam to the inside of the shell, heating the cabinet and the water. This unique and high-quality insulation type makes every Wellis hot tub extremely energy efficient, saving you a lot of money, and ensuring that your hot tub is operated in an environmentally friendly way.


Relationship for a lifetime.

The Swim Spa Line is a collection of combination hot tub and swimming pool spas by Wellis. Each spa features powerful pumps, plentiful jets, aromatic therapy, SmartTouch control panel, AquaSoul sound system, LED lights, and an innovative swim area. The included Wellis thermal cover provides the highest level of thermal insulation.


Standard Dimensions (WxLxH) 14' 9" × 7' 8" × 4' 9"
Seats 2 sitting, swim area
Net Weight / Water Volume 2,309 lbs / 1,562 gallons
Frame Stainless Steel
Side Cover HorizontSide™
Reinforcement Fiberglass reinforced
Insulation Polyfoam
Drains D50 ball valve
Power Requirement 240V 60Hz 62A
Filtration 2 pcs Superfine paper filters
Heater 4 kW
Hydro Massage Pumps 1 pc 3 HP single speed + Circ. pump
Swim Spa Massage Pumps 3 pcs 3 HP 2 speed

Water Sanitization UV-C + Ozone
Control Box Gecko (IN.YE-8)
Control Panel SmartTouch (K-1000)
Jet Count 24 + W-Flow System
Fountain Jets 2 x 3 pcs
LED Lights 21 pcs LED
Headrests 2 pcs
Sound System AquaSoul™ Pro 4.1
SmartPhone App + WiFi Yes
Aromatic Therapy Liquid Aroma
Thermo Cover Yes
Wellis Swim Step Optional
Semi-Cabinet for halfway sunk ground installation Optional


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