Features:
For SaltWater / Marine Aquariums.
Easy to use.
Measure both Temperature of the water.
Green indicators for water temperature and specific for most SaltWater / marine aquariums.
Instruction:Place the hydrometer into water, If water belowthe green indicators is required; If waterlevel rise green indicators mean more SaltWater is required.

Specifications:
Component:Glass
Color: As the picture shows
Size:20cm/7.87"

Note:
1.Please allow 1-2cm errors due to manual measurement, note that you donot mind before order.
2.Due to the differences between different monitors, the picture may not reflect the actual color.

Package includes:
1 Pc Aquariums Glass Float Hydrometer