You were talking about glues a big back. I bought some japanese stuff, no idea really anything about it but it really seems like weld-on 3 because it dries so darn fast. I am wondering what exactly you guys are using, and if you are using weld on 4 and buying online somewhere in the states and getting it shipped, which company do you use. I am having a hard time finding the stuff, I got all the acrylic to build my sump today, but no good solvent.