We have a horrible algae problem that has been ongoing now since June 7. We have not yet gotten to see the bottom of the pool. I do not have the numbers here at work, but I can tell you that last weekend after I put a pound of shock from walmart and an hour later a gallon of liquid shock in it still showed no chlorine. We have done cheap algaecide, expensive (30.00 bottles) algaecide, about 30 gallons of bleach, borax, baking soda, 4 bottles of liquid shock, I have no idea how many packages of granule shock, and 2 buckets of 3" chlorine tablets. This is the last straw before I poke holes in the swamp. We cannot vacuum when we are not in the pool (It is too hard for either of us to get the vacuum head in the skimmer from the outside) and neither of us can stand getting in that deep water when we cannot see more then a couple inches down. So...We are trying to clean it up enough to get in. Make any sense?? Thanks!

18 foot round above ground pool that is 48" tall