Is plexiglass fish safe?

[SFish]

What's the difference between plexiglass and acrylic? Would it be ok to make my sump out of plexiglass?

[gpdno]

Same stuff... Plexiglass is the trade mark name.

[Pny]

What's the difference between plexiglass and acrylic?

plexiglass is a registered brand name of acrylic sheets.

[SFish]

Thanks guys

[uncleof6]

Plexiglass is not a brand name. Plexiglass is a GENERIC term for acrylic. Plexiglas (one s) is the brand name... ;)