Pot/Mag/Sul is what I add and my koi are fine. With land plants, I add
sulphur to lower the pH for my acid loving plants.
--
Wendy* in N. California,

"What is man without the beasts? If all the beasts were gone, man would die
from a great loneliness of the spirit. For whatever happens to the beasts
soon happens to man." - Chief Seattle


Heather wrote:
Purchased the following at Botanix in Southern Ontario

Fertilizer 0 - 0 - 22

Soluble Potash 22.0%
Soluble Magnesium 11.0%
Soluble Sulphur 22.0%

Is this mixture OK? How much should I use?

Thanks,
Heather