Complex sentence: Most isolation tanks use a circulating surface skimmer, cartridge filtration, and disinfection means, including ultraviolet sterilization and chemicals to keep the water free of microbes and sediment, though this is turned off during a session to keep the isolation space as quiet as possible.
Split into simpler sentences: Most isolation tanks use a surface skimmer, cartridge filtration, and disinfection means, including ultraviolet sterilization and chemicals to keep the water free of microbes and sediment. These machines are usually turned off during a session to keep the isolation space as quiet as possible.