Would 0-0-60 encourage algae? I have a veggie filter ... I guess I
could turn the water off for a few hours, drop some fertilizer in and
then open the drain up.. and then put it back into operation?


Please don't complicate this....put a few tablespoons( per 1000 gallons)
directly into the pond water. It will make the hyacinths grow like
crazy....they in turn will take the nutrients from the water and shade
it....pretty soon all the algea is gone. I also have a veggie filter, and it
just runs thru the whole system ) Jerri

http://www.fringeweb.com/Ponds/JerrisPond