Kelp is a "must have", plain and simple. The kelp used is harvested in the N Atlantic, mainly around Nova Scotia or Iceland, very cold and not very polluted. I get THORVIN from Iceland and 100% organic. For me it's just easier to source and cheaper than the Canadian, but both are the exact same kelp and both organic. For me, the trace, minerals, and enzymes are much more important than any K value. That's why it's a "must have".Im sorry I'm a total noob.
I have no idea what I'm trying to gain from kelp.
I only want to grow organic and read here that everyone is using kelp for amazing results.
The high potassium is easy to replace I guess so that whats left are the micro nutrients.
I looked green sand up and rock dust up and it looks nice.
But it doesnt seem to have nearly the same range and amount of micro nutrients like kelp does.
Greensand works great as is and suppliments kelp perfectly and I've always added to my mixes for the last 8 years. I've recently discontinued adding rock dust to my mixes as they didn't supply anything that the greensand wasn't already supplying and were just adding unwanted density to the mix.
This has just been my experience, buy and use whatever you feel comfortable with.
Wet