Home Saltwater Products Test Kits Hanna Checkers Hanna Marine Phosphate Checker HI-713 Hanna Marine Phosphate Checker HI-713$49.95 Hanna Marine Phosphate Checker HI-713 quantity Add to cart Add to wishlist Categories: Controllers & Monitors, Hanna Checkers, Saltwater Products, Test Kits Additional information Additional information Weight 3 lbs Related products ChaetoGro Refugium Fertilizer – Brightwell Aquatics $10.21 – $42.18 Select optionsQuick View Reef BioFuel – Enhances Nutrient Uptake – Brightwell Aquatics $10.21 – $18.54 Select optionsQuick View Syncra Silent 3.5 Pump (660 GPH) – Sicce $139.99 Add to cartQuick View AminOmega – HUFA Omega 3/6 Supplement for Marine Fishes – Brightwell Aquatics $8.99 – $14.79 Select optionsQuick View