Ok, that's not a Jadam water extract, but a KNF sugar extract and also really good stuff. Usage rates for those are much lower though. Where the Jadam stuff is diluted 1:20 with more water, the KNF extracts are usually more like 1:1,000.Hey Azi - The Dandelion Elixer is Emilyas recipe that I sort of simplified. Pick a bunch of dandelions, chop 'em up a bit, put in equal weight in brown sugar, I added a bit of water and a smidge of yeast. I stirred and crunched it a few times a day for awhile and let it sit for about three months. It bubbled away for awhile and smelled like silage. Not a bad smell. I probably made dirty dandelion wine!!! I strained out the dandelions a couple of weeks ago and I noticed that the liquid is still bubbling just a little - it has a definite fizz to it. I add one teaspoon to a gallon of water - I haven't noticed any growth spurts or anything but I also haven't killed anything.
The sugar extracts produce a very low pH liquid, much like a weak vinegar. So your 1 tsp / gallon is about 1:750 dilution which is on the strong side, but is also the strength I use mine at. Don't go much stronger though, at least not before testing as this is pretty potent stuff.