Oh I forgot, get rid of the filter box, you won't need it
anymore.

Veggie filters are so much better than standard biofilters, because
they strip nitrates out of the system, where the standard biofilters
strip organics, but produces nitrates.

In sal****er aquaria, particularly reef systems, the only biofilters
that are really "approved" any more are protein skimmers (not useful
in freshwater application). Much of the high flow nitrate-producing
stuff is now black listed.

Planted refugiums and deep sand beds are the main thing, now.

The deep sand bed is anaerobic. It eats organics and produces nitrogen
gas, which bubbles out of the system (no dissolved nitrates).

IIRC, this is more of a concern in reef systems, where corals are very
nitrate sensitive.

C//