On 6/27/2010 2:06 PM, wrote:

To be honest, if I had room for a 15' x 21' pond, I'd find room for a p
lant filter. It doesn't need to be that big - just something to compete with
the algae.

There is an approach in Europe that I have looked at- Natural swimming
pools. They take about 1/3rd the pool, build a wall across it that top
s
about 4" below the water level. They plant that third w/ veggies and
circulate water through it and over the top of the wall. They have
PUBLIC swimming pools that use NO clorine or chems. A veggie filter IN
the pool. Sounds like your pond might be an ideal candidate for this
approach. Can be DIY, just stack a row or two of concrete blocks.

http://www.thedailygreen.com/green-h...-swimming-pool...

Chip

Oh, after seeing those ponds, I want to remodel the entire backyard!
We should have seen this before we put in our pond last summer.
Definitely would have gone for that! But for now, hubby says no way,
too much work and too expensive. So instead we have decided to look
for a UV filter to help control the algae in our pond.

Really! I wouldn't want to argue with hubby, BUT.... Your pond is 2'
deep max, Two rows of simply stacking any style landscape blocks,
across the pond would cost less than a UV filter (which has to be
replaced periodically). Gives you a veggie filter that looks pretty,
would be much MORE effective for all types of algae control, and can be
done in an hour or so without changing anything in the pond. What's not
to like?

If you are the least bit Green, it helps the environment.

Chip