"Koi-Lo" writes:

Thanks. It's the *micronutrients* I can't locate such as water soluble
iron, manganese, boron, cobalt etc. that plants need. I'll check this place
out.

I've used a product that is intended to provide trace elements for citrus,
"Citrus Growers Mix" or something like that. All chelated minerals. Water
soluble.

HTH