Sand depth in HOB refugium?

[Monk005]

Any idea how deep I should make the sand bed in an HOB refugium?

 

[civics14]

why sand at all? what is the goal?

 

[Monk005]

Don’t I need it for copepods?

 

[civics14]

Don’t I need it for copepods?

throw some chaeto in there instead, it will be better for copepods than sand

 

[Monk005]

throw some chaeto in there instead, it will be better for copepods than sand

Awesome!