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commented on "Aqua One Hydrometer / Thermometer"
on www.tropicalmarinecentre.com.au
http://www.tropicalmarinecentre.com.au/gallery/Hydrometer/aqua-one-hydrometer-thermometer/412673
Accurately measures the salt level in your marine aquarium.
Built in thermometer.
Green indicator bar to show recommended salinity and temperature readings.
Floating.
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