Can you do sump with non drilled tank?

[jmerideth1]

FWIW With the refugium above the display tank, the tank itself is technically the sump. Which by definition is the lowest container
Thank you I couldn't figure how too say that nearly as well [emoji106][emoji106]

 

[Fin]

This is huge help. I did have a sticker but only on bottom. At first i hadn't planned anything crazy but it gets more fun and interesting with every post or video. I want to drill and have reactors and skimmers. Thank you for the post. Huge help

Just be sure to do the test first. It requires a computer monitor, laptop screen or I believe a smart phone and some polarized sunglasses or 3D glasses to make certain you are not dealing with tempered glass.