In the last 48 hours I have put 25#s of granulated chlorine and 24 ozs. of algaecide in my 54" above ground pool. The pool was a dark green and now it is a bit lighter but not much. I just bought a new test kit (not strips) but I'm really not sure what to do now? Do I buy more shock and just keep adding it? We have had the pool for 3 years now and this is the first problem I've had with it so I did what the pool store told me to and it doesn't seem to be working.