PC components produce a lot of waste heat, and without sufficient cooling will overheat, shutting down or damaging your system. Watercooling provides the ultimate in cooling and aesthetics.
This category contains a huge variety of optional accessories that can help improve the functionality or look of your watercooled PC.
Adding a flow meter to the loop allows you to monitor the flow rate of the coolant, giving you an early warning of any problems. They also look cool whirling away.
Combining one or more temperature sensors with compatible software allows you to monitor the temperature of the coolant, giving you an early warning of any problems. You can also use them to adjust the fan and pump speed if the temperature is too high or you want to reduce noise.
Leak testers comprise a hand-operated pump that uses air pressure to easily test your watercooling loop before filling it with coolant and potentially experiencing a nerve-wracking leak.