Lets see if I can describe this...

[Fish]

Originally Posted by albert_dao

Wouldn't a fine sand just get drained into your canister?

Albert,
I entered the hobby after the undergravel filter trend had already died but I'm sure it wasn't uncommon to have fine sand on top of an u-g filter was it? I believed the material they used was called "filter tidy" or something. I was just planning on cutting a fine media bag or filter sock and laying it between the sand and the u-g filter plate. I'm 'pretty confident' that it would keep the sand from getting into the cannister filter.

- Chad