Yes, you should turn it off.
There should be a configuring switch on your water system, i.e water tank or well.
A water tank float switch works by using a buoyant float that moves up and down with the water level in the tank. When the water level rises, the float also rises, triggering a switch to turn off the water supply. When the water level drops, the float lowers, turning the switch back on to refill the tank. This helps regulate the water level in the tank automatically.
No you don't need a tank to simply pump water from a lake. You would only need a tank if your using a pressure switch to turn the pump on and off.
A water pressure switch is commonly used to control a well pump. The switch is installed at the pressure tank and when water goes out of the tank pressure drops . When pressure gets to 30 psi that's usually the setting for the switch to activate the pump. The pump will come on and run for 2-5 minutes replenishing the tank to 50 psi then the switch will turn it off. (some systems are 40-60, but 30-50 is common)
To change your fish tank water effectively and safely, follow these steps: Turn off all electrical equipment in the tank. Use a siphon to remove about 25-30 of the water from the tank. Use a gravel vacuum to clean the substrate while removing water. Add a water conditioner to the new water before adding it to the tank. Slowly add the new water to the tank to avoid shocking the fish. Turn the equipment back on after the water change is complete.
To change a fish tank water effectively and safely, follow these steps: Turn off all electrical equipment in the tank. Use a siphon or aquarium vacuum to remove about 25-50 of the water. Use a water conditioner to treat the new water before adding it to the tank. Gently pour the treated water back into the tank to avoid disturbing the fish or decorations. Turn the equipment back on after the water change is complete.
If your pump is capable of making more pressure than it is now, you can turn up the pressure switch.
To turn off your hot water tank, locate the shut-off valve on the cold water supply line leading to the tank. Turn the valve clockwise to shut off the water flow to the tank.
To replace a switch in an electrical circuit, first turn off the power to the circuit at the breaker. Remove the cover plate and unscrew the switch from the electrical box. Disconnect the wires from the old switch and connect them to the new switch in the same way. Screw the new switch into the electrical box and replace the cover plate. Turn the power back on at the breaker to test the new switch.
To properly perform a fish tank water change, follow these steps: Turn off all electrical equipment in the tank. Use a siphon to remove about 25-50 of the water from the tank. Use a gravel vacuum to clean the substrate while siphoning out the water. Treat the new water with a water conditioner to remove chlorine and chloramine. Slowly add the treated water back into the tank. Turn the equipment back on. Monitor the water parameters to ensure the health of your fish.
To change electrical switches, first turn off the power at the circuit breaker. Remove the switch cover plate and unscrew the switch from the electrical box. Disconnect the wires from the old switch and connect them to the new switch, following the same configuration. Screw the new switch into the electrical box and replace the cover plate. Turn the power back on and test the switch to ensure it is working properly.
The pressure is determined by the "pressure switch" typically located at the pressure tank. The switch monitors system pressure and will turn the pump off when the water pressure reaches a predetermined level. As water is used - drawn off the pressure tank - the switch will turn the pump back on at a lower pressure. Switches are typically 30-50 or 40-60 (contacts closing at the lower pressure setting and opening at the higher setting).