Overflow

[LFCBVB]

How do people seal an acrylic overflow into their tank? I keep hearing it doesnt adhere well, but Ive literally only ever seen people use acrylic or ABS plastic. Im very conflicted.

Im talking one bottom to top and drilled from the bottom.

 

[lapin]

A lot of people silicone them in a glass tank. While the silicone will not bond to acrylic as well as glass, it will work for the overflow. When the overflow is filled the water pressure should be pretty equal from both sides.