The question is what do you need out of your sump? If you are looking for the sump to perform specific activities and those activities go beyond a simple set of chambers, then I would go with acrylic. I have owned both glass and acrylic, I have also custom made both. In my experience Acrylic allows you to be way more creative. For example, you can have built in roller filters, built in reactors, adjustable baffles, lids, etc etc. This means the sump becomes more functional. Regarding production acrylic. Clearly you are getting high production quality, but you can have a sump custom made to your needs and wants for not much more.. possibly even less depending on your design. Sent from Singapore Reef Club mobile app