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Products will be delivered between 2 and 5.
Facilitates easy monitoring of oxygen levels in freshwater
Rapid breathing at the water's surface is a clear indication of low oxygen levels. Sadly, by this time, it might already be too late to take the necessary steps.
The sera O2-Test checks the current oxygen concentration in your water within moments, enabling timely action. The sera O2 plus offers an immediate oxygen boost.
Enough for approximately 60 tests.
www.sera.de/fileadmin/user_upload/manuals/sourcefiles/04914_sera_O2-Test_2015-06_INT.pdf