No, the gas patio heater does not only work with 5 kg propane. It can also work with other sizes of propane tanks, such as 10 kg or 20 kg. The heater is designed to be compatible with various sizes of propane tanks, providing flexibility for users to choose the size that best suits their needs. **

To lay patio slabs with more than 5 cm of gravel, you will need to first prepare the area by digging a trench and filling it with a layer of compacted gravel that is at least 5 cm deep. Then, you can lay a layer of sand on top of the gravel to create a smooth and level surface for the patio slabs. Once the sand is in place, you can then lay the patio slabs on top, making sure they are evenly spaced and level. Finally, fill the gaps between the slabs with more sand or gravel to secure them in place. **

As of my knowledge cutoff date in September 2021, there has been no episode of the One Piece anime that shows Luffy using Gear 5. Gear 4, also known as Boundman, is the highest level of Gear that Luffy has demonstrated in the anime. It's possible that future episodes or chapters of the One Piece manga may reveal a Gear 5, but as of now, it has not been shown in the anime. **

To connect outdoor lighting, you will first need to plan the layout and design of your lighting system. Next, you will need to run electrical wiring from a power source to each light fixture, making sure to bury the wiring at the appropriate depth and use waterproof connectors. Once the wiring is in place, you can then connect each light fixture to the wiring, following the manufacturer's instructions for installation. Finally, you will need to test the system to ensure that all the lights are working properly and make any necessary adjustments. It's important to follow all local building codes and safety guidelines when connecting outdoor lighting. **

To combat algae or mold on patio furniture, you can start by regularly cleaning the furniture with a mixture of water and mild detergent. Scrub the affected areas with a brush to remove the algae or mold. Additionally, you can use a solution of water and white vinegar to kill and prevent the growth of algae or mold. It's also important to regularly clean and maintain the furniture to prevent the buildup of moisture, which can contribute to the growth of algae or mold. Finally, consider using a protective cover for the furniture when it's not in use to prevent moisture buildup. **

As of now, there has been no official announcement regarding the introduction of Gear 5 in the One Piece series. The creator of One Piece, Eiichiro Oda, has not revealed any specific details about when Gear 5 will be introduced. It is likely that Gear 5 will be revealed at a significant moment in the story, but fans will have to wait for Oda to unveil it in the manga or anime. **

A timer for outdoor lighting works by allowing you to set specific times for your outdoor lights to turn on and off automatically. You can program the timer to turn the lights on at dusk and off at dawn, or set a custom schedule based on your preferences. The timer is typically connected to the outdoor lighting system and controls the flow of electricity to the lights based on the programmed schedule. This helps save energy and ensures that your outdoor lights are only on when needed. **

The outdoor lighting may not be working anymore due to a variety of reasons such as a blown fuse, a tripped circuit breaker, a faulty light bulb, or a problem with the wiring. It is also possible that there is an issue with the timer or the light sensor. It would be best to check each component systematically to identify and address the specific cause of the malfunction. **