I would use PVC swimming pool liner as thick as possible because it would be a perfect fit and also you could pick nice color of blue. Another important thing is plumbing (pipes). In US feeding pipes on swimming pool are way under size 1.5" so I recommend using 3" for the feed and 4" for the drains this way you can use low pressure pump less electricity less $$$. I would go with big settling chambers one for each drain and for the bio filter I would use massive TT nicely camouflage. Jets would be nice to push dirt into the drains. One or two skimmer, position in perfect location is a big plus. Use sequence pumps they are very efficient. You will probably need 3 of them.
I love your project.
Good luck!
Posted on May 9, 2006, 2:36 AM from IP address 69.112.77.124