Need assistance with a no free chlorine issue.I,ve done everything leslies told me to do even drain off half my water for ammonia.My gallons are 29,000 so half of that is 14.500 its getting expensive.My phosphates are 2500 plus i had an ammonia test and im good on that but i lose my free chlorine in about a hours time I did the nightime chlorine loss test and i still lost the free almost within an hour.Should i try the bleach?Isaw something somewhere about keeping bleach in until it kicked in and held free chlorine.I just need to know how much to add or what level of free chlorine i keep it at.