On Mon, 21 Jul 2003 12:52:06 -0400, "NJ"
wrote:

The pond has been great all summer, but suddenly my water lettuce is
yellowing, even the "pups". All the usual levels continue to be fine. I
have added potash every two weeks and have not done anything different.
Clarity is good; no algae problems; fish health great (even had some fry
show up this week!).

SO!

1. What might be causing the water lettuce to yellow?
2. Would adding the product Aquatic Plant Stimulant help,
and is it safe for my 4 sarasas and 1 goldfish?

We are scheduled to be part of the local "Battle of the Ponds" tour this
weekend, so I need some quick assistance.
Thanks in advance!

NJ
zone 5b





try adding a little Epsom Salts (about 1 teaspoon per 1000
gallons)
Epsom Salt is Magnesium Sulphate (sulfite?) both promote
photosyntheses.

Chelated Iron could also help

Nitrogen is also known to promote photosyntheses and works
quickly ... small amounts of Potassium Nitrate might help...but
they also might cause an algae bloom depending on how close to
the "edge" you pond balance is...

I don't know what is in "Aquatic Plant Stimulant" but would be
very surprised if it was not similar to the above recommendations
(but mostly potassium chloride ... potash)