GFCI Outlets
Ground Fault Circuit Interrupter outlets cut power within milliseconds of fault detection.
Mandatory for any aquarium electrical setup. $20 install or replacement.
Drip Loops
Cords should hang in U-shape below outlet. Water drips down cord stop at the loop, not into outlet.
Pure physics — water cannot flow uphill against gravity into outlet.
Unplug Before Touch
Always unplug heaters, pumps, lights before reaching into water. Period.
Even GFCI is not 100%. Habit beats reliance on devices.
Stray Voltage Detection
Multimeter check: probe water with one lead, ground with other. Reading above 1V = stray voltage.
Source: faulty heater, pump, or light. Replace immediately.
- ✦Replace heaters every 3-4 years preventively
- ✦Power strips with switches let you cut multiple devices fast
- ✦Surge protector for tanks in storm-prone areas