We just used a new pool company to close our pool. They did it totally different than the last company by blowing out the lines and using very little antifreeze. The previous company charged us a fortune and did not blow out the lines. Instead they filled everything with about 85 gallons of antifreeze. In the spring when they opened our pool they flushed all of the antifreeze directly into the pool water and told us that was fine to do. The new company told me that is actually very bad for the water. Any opinions on the impact of all that antifreeze in the water?