Hi I was wondering if there is an official item that has an aquarium bg? Even if it's MCs thanks!

I think this is the one you're looking for, though if you slap a window frame and some floor tile over one of the slightly cheaper underwater ones like ,, or you can make your own.

OH YEAH that's right you can make one. Thanks! I'll try that

now my question is what are the names of those walls with window cutouts? I am having a hard time searching for them

There area bunch of cut outs, things like Metal Half Square , Rusty Submarine Model , Ship Porthole , Chambray Color Swatch -This might be what you are thinking of? Unfinished white window frame as well.

Subetalodge.us is a great wiki site to help locate things too.

oh thanks so much!!!