Not sure if this is the right place to post but wanted to share my experience.
I have a small sump with basically just 3 sections, overflow, middle chamber for media or whatever (I was using this for refugium) and return section. I struggled with ph so got rid of the refugium section and got a skimmer instead.
I still wanted a refugium for pods and benefits but didn’t want to spend so much on a hang on back so I found this nice box on Amazon.
first pic was when I setup on September 6 and next pic is today, you can see the chaeto growth

I have a small sump with basically just 3 sections, overflow, middle chamber for media or whatever (I was using this for refugium) and return section. I struggled with ph so got rid of the refugium section and got a skimmer instead.
I still wanted a refugium for pods and benefits but didn’t want to spend so much on a hang on back so I found this nice box on Amazon.
first pic was when I setup on September 6 and next pic is today, you can see the chaeto growth



