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NT Labs Aquarium Lab Multi Test Kit (Up to 200 Tests) | All-in-One Aquarium Water Test Kit. Tests for Ammonia, Nitrite, Nitrate, pH, General Hardness (GH) & Carbonate Hardness (KH).
£24.89
Amazon
LaMotte Insta-Test - Nitrate & Nitrite Test Strips Expiry 11/25
£4.67
eBay
Tetra Pond Quick Water Test Kit 6 In1 pH N02 Nitrite NO3 Nitrate KH GH CL2 12/26
£9.99
eBay
Hot Tub Test Strips 50 Pack 3 in 1 Pool Spa Water Testing Kit | Quick Dip Tester Strips, Checks pH, Total Alkalinity, Free Chlorine and Bromine, for Hot Tubs, Spas and Pools
£6.18
Amazon
B&Q - Total Hardness Water Test Yes/no (10 Tablets) Water Softener Test Kit
£3.99
B&Q
Hot Tub Test Strips 50 Pack 3 in 1 Pool Spa Water Testing Kit
£8.63
eBay
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