Why not? Can you buy any other types? What is important is the supply voltage, not the type of lamps.
You can purchase a swimming pool light online from the Pool Supply World website. Alternatively, you can also purchase these lights from retailers such as Amazon.
You shouldn't! That is not normal, and indicates a serious electrical problem which could very well kill you. Have it checked out by a competent electrician.
Somewhere
You need the proper tools and the qualifications to do this job. Call a qualified swimming pool electrician or pool tech to do the job to code and install a GFCI. k
To replace a 120 volt pool light with a 12 volt pool light, you will need to ensure that the new light is compatible with your pool's existing wiring and transformer. Consult the manufacturer's instructions for the specific installation steps. It is recommended to hire a professional electrician to safely make this switch.
The lighting installed in these swimming pools are normal flouresant light bulbs within waterproof cases. The installation is actual very difficult to do. It requires draining the pool, and making indentations into the pool floor to install these lights.
You should never run a swimming-pool pump dry! The most likely problem, from the rather flimsy evidence in your question hinting at it not rotating, is not with the pump or its motor but a fault in the electrical supply to the pool plant, or in the timer or other pump controller.
That would depend on the type of light, the wattage, the shape of the pool and the size of the pool.
'Swimming Pool', sometimes shortened to 'Pool'.
because electricity spreads through water
You probably need to replace the light switch
Have a professional do it. As an insurance adjuster I had a death claim when the apartment maintenance man "fixed" the pool light and a young girl was killed by electric shock from improper wiring of the pool light.