As part of Soudoplast visits, I offer two koi ponds which has an inside 14m³, you may be surprised by this second basin that extends into the basement, nice achievement for HDPE outdoor pond and PP for inside pond.
the pics : http://www.aquatechnobel.be/piwigo/index.php?/category/466
[video=youtube;mlEQdj3smtA]http://www.youtube.com/watch?v=mlEQdj3smtA[/video]