Grout Bag
If you are planning to use a grout bag in a marine or sea environment, it is important to choose a bag made of materials that can withstand the harsh conditions. Canvas or plastic grout bags may not be suitable for use in saltwater environments as they may corrode or deteriorate quickly.
Instead, you may want to consider using a grout bag made of materials such as polyethylene or polypropylene, which are resistant to saltwater, ultraviolet (UV) rays, and other environmental factors. These materials are also lightweight, durable, and easy to clean, which makes them ideal for marine use.