Best DIY CO2 receipies out there?
Due to bills I will be making my CO2 for the 29G tank. I've read many receipies. What do you use and how long does it last. I'm looking at the sugar, yeast, geletin formulas. I'm using soda bottles, airline tubing, and airstone. I have a gatorade bottle between the soda bottle and tank.
And all you high techers out there, I can't afford fancy gadgets so please don't answer to buy one.
Multiple planted tanks 1.75g to 55g.