if you already have a container for the sump(fish tank) then you can go to homedepot... u dont need the super fancy extra thick ones... home depot sells 1/4" thick plexi for you to use... OR you can skip all the trouble with glueing acrylic and waitin for it to set, and just build a sump with the drawer system. do a search on diy sump, youll get plenty of results.