Do a search for planted aquarium links. I put a home made mix in mine which
is nick named PMDD. I use this on a well lit Aquarium regularly. I have also
put it in my pond and it did not turn green.

http://www.thekrib.com/Plants/Fertilizer/pmdd-tim.html

"lee" wrote in message
...
Plants in the vegie filter and pond are not growing strongly. Water cress
leaves are very small despite a good root system and plants in the pond
show
little growth. pH is 8.4. GH 60 mg/L KH 120 mg/L.
Pond is 1000 gallons and has 5 koi and 6 goldfish. Day time temp is 17c.
Feeding plants with potash and epsom salts has helped green up the leaves
a
little. Anyone suggest how to get the plants into growth. Many thanks. C.