Yokall

I found a few buckets of water around the edges was enough to cover the bottom of the quarry and now have a healthy supply of obsidian. :)

Ah I see. My mistake was not doing that at the start. Now I have a massive hole that's going to take ages to fill with a bucket. Thanks for the help.

I've started a small quarry and read about how its a good idea to flood it so it doesn't stop if it hits lava. I made a pump and thought I could just stick the end of the pipe over the quarry but the water stops in the last pipe block and doesn't come out. How do you flood a quarry effectively. I don't want to have to use a load of buckets. ;)