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Some issues like airflow blocks or leaks may require disassembly before cleaning. These videos will show you how to do so.
"Breakdown" on how to access and fill the heating chamber.
How to start the fast and slow light cycles and the meaning of LED light indicator in different situations.
Short video covering different aspects of the general use of the Hydrology9, including temperature setup and battery level check.
Maintenance instructions for possible air flow or leakage problems.
Hydrology9 (Original) Temperature Guide