Plexi Glass

[landshark777]

Anyone else have a problem with their Plexi Glass fish tank cover warping?

 

[38bill]

Fairly common. Not much you can do but flip it over every few days or replace it with thicker cast acrylic (Plexiglass is a brand name) or use a polycarbonate (Lexan). Extruded acrylic absorbs something like 4-5 times as much moisture as cast which causes it to warp much easier. You could also glue braces to it but that starts getting ugly and can still warp or just use glass.

 

[landshark777]

Fairly common. Not much you can do but flip it over every few days or replace it with thicker cast acrylic (Plexiglass is a brand name) or use a polycarbonate (Lexan). Extruded acrylic absorbs something like 4-5 times as much moisture as cast which causes it to warp much easier. You could also glue braces to it but that starts getting ugly and can still warp or just se glass.

Thanks ,I guess I will resort to flipping until I get a glass one