Hi. We bought a house six weeks ago that has an above ground 10,500 gallon pool with a Hayward sand filter and pump. The pool had been covered and unused for at least a year, maybe longer. Not knowing anything about pools, we hired a pool service company to open it. They took the cover off, gave me some shock powder, and said to throw in a couple of pounds. Long story short, we were only been able to use the pool one day in the first month. I couldn't get the FC to much above zero, and the recommendations from the local Leslie's store didn't make the situation better. I found this site, read the Pool School info, and decided to SLAM the pool which I've been doing this week. I just did an OCLT and the FC and TC are both 10, so that means the SLAM is finished, right? However, I still have some dark green stuff that settled onto the bottom of the pool overnight, although the water looks great. Should I be concerned about that green stuff? Secondly, what if anything do I need to do to bring the chlorine down to a level where my kids can use the pool? Lastly, I've had a problem with the hose between the Hayward pump and filter blowing off on one end of the connection or the other. It's happened three times and each time we've lost 1000 gallons or more of water. The pressure gauge on the filter consistently reads 11PSI. After the first time the hose came loose the pool service guy put two clamps on each end but we had two more blow - offs. After the third failure I replaced the hose and bought two T hose clamps at a marine supply store ($18 each!). Despite that the hose still seems to be moving a little on the fitting on the pump end. I'm completely paranoid about the hose now and am afraid to run the pump unless my wife or I can monitor the hose. Are these hose blow - offs a symptom of some problem? I emailed Hayward and the response I got was a suggestion to use "barbed fittings." Where can I buy those? I've looked in Leslie's and Namco and haven't seen anything like that. Thank you for any advice you can offer.