Hi Thenewguy.

You basically have 3 types of filtration, mechanical for junk like flower
petals, leaves, grasses etc, biological for converting ammonia (fish waste)
into nitrates that fertilize your plants, and plants which remove excess
nutirents from the water thru roots. They all work together.

Karen
Zone 5
Ashland, OH
http://hometown.aol.com/kmam1/MyPond/MyPond.html
My Art Studio at
http://members.aol.com/kmmstudios/K....M.Studios.html
for email remove the extra extention