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Auralis living Gardentub series with faucet and shower - the Auralis Living white Gardentub with 2 people enjoying the luxury of an outdoor bathtub

How to Maintain Crystal Clear Water in Your Gardentub with a Filter Pump and UV Lamp

Keep your Gardentub water crystal clear for weeks with an Intex C330 filter pump and UV lamp. Reduce waste & prevent algae even in sunny Spain.
We aim for maximum user satisfaction while keeping environmental impact as low as possible. Filling a Gardentub with 300 litres of fresh water for every single session is a clear example of unnecessary water waste – not to mention the extra cost. That’s why we searched for a practical solution to minimise water wastage. Below we share exactly how we achieved it.

The Setup That Changed Everything

For the past two weeks I have been running the Intex C330 filter pump in combination with the SUNSUN (Wiltech) CUV-111 UV lamp.  

 

Where I previously struggled with algae growth, the water has now stayed crystal clear for a full two weeks. The Gardentub stands on a balcony in sunny Spain and is partially exposed to direct sunlight. Without the UV lamp, algae would appear after only three days. That problem is now a thing of the past.

 

With a few fittings and some simple DIY work we created an ideal circulation system that keeps the water in excellent condition – even in the Spanish and Portuguese climat

Practical Tips for Long-Lasting Clear Water

– Always use the cover after bathing. It keeps dirt out and blocks excessive sunlight.  
– Because our cover has a cut-out for the faucet, we can still run the filter system even when the cover is fully in place.  
– A timer is a useful addition so the pump and UV lamp run automatically at set times.  
– Always shower before entering the Gardentub. Sunscreen and dead skin cells quickly cloud the water.  
– Add small amounts of sodium bicarbonate (baking soda) to keep the pH balanced.  
– Clean or replace the filter cartridge regularly.
 

Extra Setup Tips for Best Performance

– Replace the transparent hose that comes with the Intex C330 with a 32 mm non-transparent hose. This prevents algae growth inside the hose itself.  
– Keep all piping as short as possible to maintain good pressure.  
– Use sturdy hose clamps to avoid leaks.  
– Prefer 19 mm garden hose for minimal pressure loss (16 mm also works).
Auralis Living white Gardentub - look how clean the water is after 2 weeks

Approximate Costs

 
| Item                                      | Where to buy          | Approx. price     |
 
| Intex C330 filter pump                    | Leroy Merlin / Amazon | €30               |
| Intex filter cartridges                   | Leroy Merlin / Amazon | €5 each           |
| SUNSUN (Wiltech) CUV-111 UV lamp          | Amazon                | €60               |
| Non-transparent 32 mm hose                | Leroy Merlin          | €5 per metre      |
| 32 mm hose clamps                         | Leroy Merlin          | €1 each           |
| 19 mm garden hose (25 m roll)             | Leroy Merlin          | €20               |
| 19 mm to 32 mm coupling                   | Amazon                | €7                |
 

Final Note

We considered offering complete ready-to-install kits in our shop. However, the legal and administrative requirements turned out to be quite extensive, so we decided against it for now.
If you have any questions about the setup, feel free to contact us:
– Email: info@auralisliving.com  
– WhatsApp: +34 628 214 653
Enjoy your crystal-clear Gardentub sessions while saving water and reducing environmental impact!