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1. Clearwater 3-in-1 Hot Tub Test Strips - 100 Count for Chlorine, pH, Alkalinity

   eBay

2. Clearwater 3-in-1 Hot Tub and Spa Test Strips - 100 Count for Chlorine, pH, Alka

   eBay

3. Clearwater 100 Count 3-in-1 Hot Tub and Spa Test Strips for Chlorine, pH, Alk...

   eBay

4. Clearwater pH plus 500g , Unopened, For Pool / Hot Tub / Sauna

   Clearwater pH plus, unopened

   eBay

5. LaMotte Insta 3 Plus 3 Way Test Strips for Chlorine - Hot Tub Spa Pool

   They will give you an indication of the free chlorine or bromine available in your spa water and if you need to increase or decrease your pH with pH plus or pH minus.

   eBay

6. 2 x 50 Insta 4 Plus Test Strips for Hot Tubs & Spas

   Hot Tub Supplier are distributors of luxury ZSPAS and ZEN SPAS hot tubs designed with the latest Balboa Water Group systems. Used to test the free chlorine, bromine, alkalinity, pH & Total Hardness levels of swimming pool, spa or hot tub water.

   eBay

7. NEW! TA+ Alkalinity Plus 1Kg Raiser for Swimming Pool Hot tub Spa Increaser

   Powder for increasing total alkalinity in hot tub and pool water. 1Kg Blue Horizon Aquasparkle TA Raiser.

   eBay

8. 4 x LaMotte Insta 3 Plus 3 Way Test Strips for Chlorine - Hot Tub Spa Pool

   They will give you an indication of the free chlorine or bromine available in your spa water and if you need to increase or decrease your pH with pH plus or pH minus.

   eBay

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