Lid and sand preference

[Buckey01]

Hi everyone! I finally purchased a used 40.2 waterbox cube AIO.
I will slowly begin the build. I was wondering where I can find a mesh lid to purchase?
Also, what kind of substrate does everyone recommend?
I was leaning towards argonite substrate?
Thank you!

 

[Mystikal]

HI! A couple makers out like Red Sea, make a DIY type of lid. Others have used acrylic makers to get a custom lid... Ive used the Red Sea one in the past without issues...

As for sand, Ive used CaribSea Arag- live to help cycle my tank recently.

 

[Buckey01]

Thank you. I found a product in home depot that I was able to cut and use as a make shift lid