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So regarding temperature, I've been corresponding with Len Porzio, the author of that guide I linked you to, "Kombucha, the Balancing Act". I told him about my Arduino controlled kombucha incubator, which keeps it at 80°F. Based on his experiments, he stated that a temperature that high (I'm...

I'm jealous by how sparkling clear your kombucha is. Just curious, but what are you using to check the pH levels? Has it been calibrated? I was thinking getting one of those cheaper meters you can find on eBay to measure my kombucha, but from what I hear they're fairly unreliable. As for...

That's actually a great idea. Do you submerge the entire heater + cord into the kombucha? I guess I'd be worried if the materials they use are food safe or not... What temperature do you keep it at?

HERE IT IS. The reason I made this is that it turns out my basement apartment doesn't get much above 71°F, so I figured this would give the brew a nice boost. This is mainly just for fun. After doing all of this though, and realizing that I like kombucha enough to warrant getting...

Also, what about this just for the purpose of dispensing: Use a smaller CO2 tank, maybe even a paintball gun tank (which are easily had for $15 used for a 20 oz). My spunding valve will have a T-joint. At the top will be the pressure gauge. The other will be connected to either the adjustable...

This is really good to know. Thanks for the tip! I didn't think of yeast like that. On a side note, is there a 'culture' of yeast with this setup and similar ones? So if I add half the amount of recommended yeast, will they accomplish the same thing as a normal amount but in a longer time? In...

I suppose a hand-pump style would suffice? Wait... do those exist for corny kegs? EDIT: yes they do. Also, KevinM, we ideally want to put these into bottles but we'll also be drinking straight from a chilled keg. This will be served at a local market in cups and bottles for those who want them...

So it seems like a good route would be to use a spunding valve. The problem is that I can't find any pressure relief valves that are rated 50 psi or higher. Most ones discussed here only go to 20. Could I achieve the correct amount of carbonation with only 20 psi?

Thanks for the quick input, guys. I would say force carbonation would be a step I could take a bit later after this becomes more feasible to me financially. Also, the idea of brewing with yeast seems like something I'd like to play around with for awhile! I have easy access to used corny kegs...

Forgive me for my newbness, but I've been wanting to have finer control over the root beer I've been brewing. Bigger batches make sense to my situation rather than brewing in individual bottles. So, tell if this would work... If I had a 5 gallon keg that I could brew the root beer in, and...