Description
The GEX Crystal Thermometer S/SS helps regulate aquarium water temperature.
Key Features
- Maintains stable water temperature for fish health
- Suitable for tropical freshwater and marine aquariums
- Reliable temperature control for year-round use
GEX Crystal Thermometer (S/SS) for Nano Tanks
The GEX Crystal Thermometer in S and SS sizes is a neat glass thermometer for the small planted and nano tanks that suit Singapore apartments. Its slim, discreet form sits unobtrusively against the glass so it does not dominate a carefully scaped layout, while still giving you a constant temperature read with no batteries to fail. For shrimp tanks and nano community setups, a quiet visual check at every feeding is often all the monitoring you need.
In our climate the job of a thermometer is mostly to flag overheating, since ambient 27-29C pushes tanks upward rather than down. Place it away from the heat thrown by lights and filter motors so it reads true water temperature, and ideally where the front-of-house viewing angle keeps it visible. The SS size suits the smallest jars and bowls; the S fits typical nano cubes without crowding the scape or interrupting the line of sight.
For positioning and accuracy tips, see our thermometer complete guide and our best glass thermometer roundup. Find fans and other temperature kit in our heating and cooling range.

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