Sump tank busted in the middle of the night.

[kari]

Don't try using the thicker weldon thinking it is easier to make water tight joints. It will get messy and work against you. Almost always leaks somewhere. Trying to seal pourly cut edges with thicker weldon sucks. I would use a table saw to cut your acrylic pieces. If you don't have one, maybe your supplier can precut all pieces. Make sure the pieces are cut accurately and square.
Just had to throw in my 2 cents again. Its probably all cover in that link above anyway.

Kari