Our system is now entirely veggie filer based. Our water is pulled
from the bottom of the pond by a submerged pump. It goes through an
upflow barrel and through veggie filters. On one side, it goes
through a 4 x 4 filter and then a 4 x 8 filter and then returns via a
water fall. The other side is an 8 x 8 veggie filter.

We are thinking about putting screen in the barrels next year to
collect some more of the small particles.

Seems to work well.

Cleaning is just drain and flush the veggie filters once a year.

We run a UV in the spring when the algae starts. Once the plants are
working, we cut the UV off.

Jim