Fish Tanks & Supplies

Pawfly pH Pen & ORP Meter, 7 in 1 pH ORP S.G Salinity TDS EC & Temperature Meter, Digital Salinity Tester pH Meter for Swimming Pool Drinking Water Aquarium Hot Tub Saltwater & Spa 7 in 1 Water Tester: Professionally test the salinity (Sodium Chloride), pH, ORP (Oxidation-Reduction Potential), S.G (Specific Gravity of Seawater), TDS (Total Dissolved Solids), EC (Electrical Conductivity) and temperature of water. Super wide... Pawfly pH Pen & ORP Meter, 7 in 1 pH ORP S.G Salinity TDS EC & Temperature Meter, Digital Salinity Tester pH Meter for Swimming Pool Drinking Water Aquarium Hot Tub Saltwater & Spa