Back ground on a tank with external overflow box?

[sphelps]

Yeap acrylic on the inside to cover the whole pane is the common approach. Just make sure you have a decent amount of clearance or in other words the acrylic isn't a snug fit as plastic expands way more than glass when heated, enough to burst a seam

[nerdz]

Thanks, seems like most common is acrylic inside the tank.

How thick did you guys go? Did it warp at all?

Lots of Alberta help, maybe a local could chime in where to buy some around here?

Thanks again for responses

[gregzz4]

If you go the acrylic/plex route, Fiber-tek on boundary is great to deal with, and open saturdays

[sphelps]

1/8" thickness, silicone it to the glass, it won't warp.

[nerdz]

Originally Posted by sphelps

1/8" thickness, silicone it to the glass, it won't warp.

Thanks, did you find any issues with water getting behind it?

[nerdz]

Originally Posted by gregzz4

If you go the acrylic/plex route, Fiber-tek on boundary is great to deal with, and open saturdays

Perfect, that's a really easy location for me to check out!