D.... try Paragon Plastics in Santa Ana... they also sell scrap acrylic by the pound for your patch work. If the tank were smaller I'd say bring it by and you can use some of my weld on.
Big Dogg... If you wanna shoot by my place I have #16 glue. You can use it till your done. I got it from a spot off the 405fwy just passed the Western Exit (going south on the 405)