Aquarium Hydrometer
Aquatic Gardens Aquarium Hydrometer with Thermometer (8"Height)
Measure the salinity of your marine or reef tank quickly and accurately while also monitoring water temperature with our dual-purpose glass Hydrometer/Thermometer.Features easy-to-read markings along with safe zone indicators.
Merchant: Petco
Aquarium Systems Instant Ocean Hydrometer (6"Height)
Quickly, easily, and accurate measure your marine aquarium's salt level and specific gravity with Instant Ocean Hydrometer.Full range scale features easy to read markings with safe zone clearly indicated.No-wet-hands-design.Accurate to +/- 0.001.
Merchant: Petco
Red Sea Hydrometer w/ Digital Thermometer
With both continuous and periodic measurement of specific gravity and temperature in "real-time", this hydrometer is a perfect way to ensure proper salinity in your saltwater aquarium.
Merchant: PETsMART
Marine Salt Water Aquarium Starter Kit ()
Marine Starter Kit includes:Hydrometer with digital thermometer for accurate & easy measurement of specific gravityMarineGro, a premium quality, high perfomance color enhancing fish foodBuff Supplement, an essential supplement for maintaining a high buffer capacity and stable pHp
Merchant: Petco