CartRemove itemThumbnail imageProductPriceQuantitySubtotal × Digital PH ORP (2 in 1) Controller w/ Electrodes plus CO2 & O3 Relay $365.42 Digital PH ORP (2 in 1) Controller w/ Electrodes plus CO2 & O3 Relay quantity $365.42 × 2 in 1 Continuous Temperature & PH Monitor w/ Backlight & Replaceable Electrode $86.03 2 in 1 Continuous Temperature & PH Monitor w/ Backlight & Replaceable Electrode quantity $86.03 × 6 in 1 Multifunction Water Quality Tester pH / ORP / EC / CF / TDS / Temperature $188.00 6 in 1 Multifunction Water Quality Tester pH / ORP / EC / CF / TDS / Temperature quantity $188.00 Coupon: Apply coupon Update cart Pay with Proceed to checkout — or — Cart totalsSubtotal$639.45Shipping Australia Post Parcel (Tracked): $17.93 Shipping to New South Wales.Change address Country / region Select a country / region…Australia State / County Select an option…Australian Capital TerritoryNew South WalesNorthern TerritoryQueenslandSouth AustraliaTasmaniaVictoriaWestern Australia City: Postcode / ZIP: Update Total$657.38 (includes $59.76 GST) Pay with Proceed to checkout — or —