I did a little research on the subject but didn't come across what I was looking for yet. 2 things:
1. Will regular PVC threaded fittings from had or lowes work on my filter, skimmer, and return?
2. I want to add a second return. Any suggestion on the best way to drill the hole without dumping the water level below the return line other than to work fast and wear a swim suit and plastic bag around the drill!?