Features:
For saltwater and marine aquariums.
Easy to use.
Measure the water temperature.
Green indicators for water temperature and specific to most saltwater/marine aquariums.
Directions: Place the hydrometer in the water, if water below the green indicators is needed; if the water level rises, the green indicators mean more salt water is needed.

Features:
Component: Glass
Color: As the picture shows
Size: 20 cm.

Note:
Please allow 1-2cm differs due to manual measurement. Please make sure you do not mind before you bid.
2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.

Package includes:
1 x Aquarium Glass Floating Hydrometer