Happy Hot Tubs - the best for your hot tub
10 x Spa Fusion Shock Sachet

Spa Fusion is fast-reacting for Rapid Water Recovery. It destroys non-filterable wastes and enhances water clarity.

Regular use helps maintain clear water. Spa Fusion destroys soluble organic wastes and irritating chloramines in spa water, which can result in odours, reduced water clarity and unpleasant bathing conditions.
One 35g sachet treats 330 Gallons (1500 litres) of water.

FAQ's regarding this product

How long until my hot tub can be used after applying a sachet ?
Usually you should not use your spa about 6 hours after shock dosing.

Will these sachets affect my Chlorine / Bromine level ?
No, however if you test your spa directly after dosing, an irregular result may be given.

Will these sachets work in my pool ?
Yes, however your sachet will need to be dissolved in a bucket before being dosed into the pool.

My Pool/Spa is Green/Cloudy, Will these sachets clear the water ?
Yes, These sachets are designed for water recovery but if the water is extremely dirty, a water change may be required.



Really does what it says and really keeps tub water clear and sparkling. Have used for ages and always good. No ...

Rated by Michele Crumb

Happy Hot Tubs offer the best value on this essential hot tub maintenance product, undercutting price on any other supplier ...

Rated by Stephen Hennessy

Good value and works affectivelyb Keeps dry as individual sachets Good value way of buying ...

Rated by Carol Llloyd

Excellent product, solves any cloudiness & leaves the water crystal clear ...

Rated by Fiona Edwards