The pH level of your Spa should be kept between 7.2 and 7.6. You can apply the pH minus directly to the spa (so long as the water temperature is above 20 degrees celsius, or by pre-diluting in a container of warm water before adding to the spa water. ).
eBay
Hot Sale 6 Pcs for Intex Pure Spa Reusable Washable Foam Hot Tub Filter Cartridge Type Promotion 100% brand new and high quality
Aliexpress UK
Incorrect pH levels can impact the water quality, imbalance other chemicals, and cause the water to give itchy skin and eyes. If pH levels drop below 7.2 acidity increases and a pH increaser is needed.
eBay
Modern Plastic Folding Bathtub Adult Half Body Bath Basin Household Ice and Hot Bath Portable Bathtubs Winter Spa Bath Artifact
Aliexpress UK
InSpire Alkalinity Increaser is used to raise the total alkalinity level in your hot tub. InSpire Alkalinity Increaser 1kg. Test the total alkalinity level of the hot tub water and if it is below 80mg/l (ppm) use Alkalinity Increaser to raise the level.
eBay
Foldable Bath Bucket PVC Material Hot Bath Ice Bath Ice Therapy Sauna Adult bathtub Bathtubs for The Baby Large Family Pool
Aliexpress UK
5 in 1 Multifunction Tablets may be Blue or Blue/White in colour. Sapphire tabs may be used for all water hardness’s. They are the complete swimming pool care for the duration of disinfection, algae prevention, flocculation (for sand filters), pH stabilization plus clear effect.
eBay
Rechargeable Underwater Submersible Pool Lights with Remote IP68 Waterproof Color Changing Led Floating Lights for Hot Tub Bath
Aliexpress UK
Hot tub ph increasing granules, use ph+ to increase your ph levels in your spa or swim spa if it is testing too low on your test strip. Test the pH of your water and if it is below 7.2 use Blue Horizon pH plus to raise it.
eBay
Solar Pool Ionizer Light Up Chlorine Holder 7 Colors Pool Water Clarifier Adjustable Chemical Delivery for Pool Spa Hot Tub
Aliexpress UK
PH Minus is also used to decrease the Total Alkalinity of your Spa, Hot Tub or pool water. Add 10g of Happy Hot Tubs PH Minus per 1000 litres to bring the PH down. For best results pre-dissolve before putting into your pool or spa.
eBay
Portable Swimming Pool Cartridge Filter Cleaner with Handle One-key Start Hot Tub SPA Water Filter Cleaning Hose Attachment Tool
Aliexpress UK
Clearwater 1KG PH + Increaser. Bestway Clearwater 1 kg pH Plus allows you to adjust your pools alkalinity with ease. Avoid the itchy eyes and irritated skin that are caused by a drop in the levels of pool acidity.
eBay
Type VI Filter Spa Filter Cartridge Compatible with GYMAX SPA & Most Hot Tub, Massage Pool, Inflatable Pool, Swimming Pool
Aliexpress UK
PH Plus is also used to increase the Total Alkalinity of your Spa, Hot Tub or pool water. High Quality Happy Hot Tubs PH Plus - Multiple Sizes. Why Happy Hot Tubs?. We have over 30 Years experience in Hot Tubs and Pools!
eBay
1pc Replacement Hot Tub Spa Filter for PWW50 6CH-940 Superior Spas Elite Spa Household Swimming Cleaning Supplies for Waterways
Aliexpress UK