one of my clients has a hot tub on his upper deck about 10 feet above, this is on the north (shaded side) of the house, tall fescue lawn, the grass grew in good, then died away in an area roughly 10 by 10, now its just plain soil again, can Bromine water condensated on the cover, that runs off when the tub is open kill the grass below? I'm doing a lot of work at this house and this is a real problem spot. any help or suggestions would be appreciated. the grass all around this area is thick & healthy. it looks kinda like water flows over it and washes it away.