I recently took on the task of turning my mother-in-laws swamp into a pool and thought I would share. Stabilizer, algicide, acid, shock, shock, shock, shock, and removing the ridiculous piles of algae was the key. I ended up filling about 6 large contractors bags full of algae in the process.
I lurked here for a few days, and learned a lot from the threads I read through.
Cleaned the filter before and after, and was backwashing about every 6 hours.
Now to start on the landscaping and rest of the backyard.
Thanks for the help!