Photo 1 of usvehj SALT-3050 Digital Salinity Tester, for Pool & Pond Salt Water Tester, Waterproof IP65 Meter, SALT3050 Salt 3050 Digital Salinity PPM Temperature Tester for Salt Water Pool & Koi Fish Pond

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Photo 1 of usvehj SALT-3050 Digital Salinity Tester, for Pool & Pond Salt Water Tester, Waterproof IP65 Meter, SALT3050 Salt 3050 Digital Salinity PPM Temperature Tester for Salt Water Pool & Koi Fish Pond