I've just stumbled across possibly the easiest way to obtain this miracle stuff for your soil/plants. Find a pet store that deals with large animal/livestock feed and they should carry pure calcium carbonate as a dietary supplement.
I just paid $5.40 for 4 kg!!!!
I usually mix up 2 kg's to 200 litres of soil along with my other amendments, and just watch your brix levels soar through the roof!
Then I don't add anymore until flowering sets in, in which you just sprinkle half a cup over the top of your soil and water, then top up again 2-3 weeks the same way.
Hope this helps!
-GK
I just paid $5.40 for 4 kg!!!!

I usually mix up 2 kg's to 200 litres of soil along with my other amendments, and just watch your brix levels soar through the roof!

Then I don't add anymore until flowering sets in, in which you just sprinkle half a cup over the top of your soil and water, then top up again 2-3 weeks the same way.
Hope this helps!
-GK