In article , "RichToyBox"
writes:

I grow mine in the final filter before the water
goes back into the pond, hoping that it will take a lot of the nitrates out
of the stream.

that's where mine are in the final filter. What part of the country are you
in, Virginia? When I was in Houston, I had no trouble growing WL or WH, also
had a steady Ph of 8.7 without doing anything and the WL would grow dinner
plate size, so I guess it's what's not in the water here that's giving me
grief. Don't think I'll do anything about it this year, but next year I might
try the iron and see if that makes a difference.

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