Can you repair a crack in a hot tub with the water still in it?

Repairing a crack in a hot tub while it's still filled with water is not recommended, as it can complicate the repair process and may lead to further damage or safety hazards. Most repairs require access to the affected area, which is challenging with water present. It's best to drain the hot tub, allowing for a thorough inspection and proper application of repair materials. Always follow the manufacturer's guidelines for repairs to ensure safety and effectiveness.