I used 2 cups water, 2 cups sugar, 1/4 teaspoon yeast, 1/4 cup of 100 degree water for rehydrating/activating the yeast first. tmix i got from a site that was writen by John LeVasseur and all he talks about is DIY CO2 systems. Its called "A Treatise on DIY CO2 Systems for Freshwater-Planted Aquaria. GOOD LUCK! Hope this helps.
Sorry at the time I wrote this I didn't use the mix yet but I did last night an for the third time it was a waste of time didn't work at all the other mixes I tried atleast got bubbles in the counter but nothing in the tank I started it last night at about 12:00am an at 5:00am nothing!!!! Ill have my wife look again at 7:00 or so but I know the outcome any my advice get a CO2 tank and call it a day this bull don't work I had one mix start then it started to overflow in the counter that was the close I got. So anyone sellin a CO2 system let me know??????????