Our Iris are on top of a barrel filter, in a laundry basket with a lot of
holes. The roots reach down into the barrel. lots of growth...massive,
tall Iris! Probably eating up nutrients. Went from three plants to a 15x23
mass of plants in a season. WH probably does better...lots to throw out.
Mine are just coming to that stage now.

Good luck!

Jim

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"Benign Vanilla" wrote in message
...

wrote in message
...
no, in a pot iris wont really clean it up. you need roots dangling in
the
water and
if there are fish they will go after the roots. the roots are where the
little
critters are that fish eat. for best water and clarity build a veggie
filter. a UV
will help tho. Ingrid
snip

IMHO, it depends on the pot. I have been using pots (really cheapo laundry
baskets with large holes) with holes in them. Right now, my iris are the
only plants up to speed in the VF, and my numbers are all perfect. The
small
amount of WH are contributing to filtration, but the Iris are doing the
bulk
of the work right now.

BV.