eztoch pool ph salt chlorine tester 8 in 1 digital salinity tds ec orp h2 | ph chlorine for salt water pool, hot tub, hydroponic, aquarium, hydrogen water bottle, simultaneously display ph&ci-temp is up for auction in Patio, Lawn & Garden. The current bid is $5.50, 82% below the $29.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.