Micronized iron

It's an iron additive which can be added to substrate to increase the amount of iron. It's chemical sign, Fe...? You can find at garden stores and you shouldn't use too much, and don't mix with peat since it will leach a lot of iron into the water.

Since I'm not local, do you have a web site that I can buy from?

www.gregwatson.com sell iron/Plantex etc

Regards,
Tom Barr

Thanks Tom.
Btw, why not mix it with peat?
I understood that if I use a very small amount with peat, the results are much better... Isn't it?

acid from peat makes it all disponible to water column