"HTH" wrote in message
...
What is a good depth for a veggie filter ?

Depends on how many birds you intend to kill with one stone. I use two 55
gal drums, those are about 4ft tall, this setup lets me have a bio filter,
settling chamber and veggie filter all in one enclosure.

Also consider what kind of plants you intend to keep in the bio filter, and
what their preferred depth is. Remember you can always raise the pots by
placing them on bricks, upside down pots, etc, but you can't make a water
filter deeper.

Snooze