Mine is a fairly expensive humic acid. I got it a couple of years ago when I was learning the modified KNF method.Hey Bill,
What's the water/humic blend you use? I might point @Entombed towards your thread here. He's emailed me a couple times asking a few questions. I told him to get on here and read some of the earthbox threads from you and fermented fruitz.
It's only 1/4tsp/gal. I have enough for many years. I use it to help things along and moderate things a bit.
I was hard to get at the time. RAW brand will work also.