gidigi ph meter chlorine tester digital 7 in 1 pool water tester kit salinity tester for saltwater aquarium orp meter for hydroponics drinking water pool water tester ph and chlorine for pool spa red+white is up for auction in Patio, Lawn & Garden. The current bid is $1.50, 96% below the $39.99 MSRP, in As Is condition. Bid on this item at our Georgetown - Triport Road location before the auction closes.