Thanks for all of the replies. To be honest, I drank one and I wasn't feeling well but it also could have been this other thing I ate.
Probably all in your head, honestly. You sound overly worried about this whole thing in general. Relax, it's just tea.
As for PH and sugar plus alcohol content, I bought something on Amazon to measure all that.
What did you buy, may I ask?
As for safety, how do I know if I will kill myself with this stuff? It doesn't look like mold, but ANY bacteria could form.
You're not going to kill yourself. Mold is pretty easy to spot, and fairly easy to prevent with good practices and keeping your booch in a good environment.
As for bacteria, kombucha's low pH and active yeast/bacteria combo keeps most other stuff from being able to thrive.
I am going to switch to an open mouth jar instead of a growler
Good idea.
1) How long do you typically brew?
I'm on a seven day routine. You're timeline will depend on your personal tastes, temperature, etc, but 7 days is a good place to start.
2) When you ferment, how long and do you keep a scoby in it?
The whole seven days, until it's time to bottle.
The scoby will get bigger over time. Just peel off some the excess layers from time to time.
3) What happens if I don't have carbonation after a second fermentation?
Try adding a small amount of additional sugar (simple syrup), or 100% fruit juice to the bottles at bottling time. Don't overdo it, if you can have bottle bombs.
How long are you doing your second ferment for?
4) How do I know if I'll die from this stuff?
Highly unlikely.
5) How do I store the extra scobys?
I just throw them away.
6) If I am away from home for more than a week, can I keep everything fermenting?
You can, but if left too long, it will start to become overly strong and taste bad. If that happens, just use some of the batch for starter-tea, throw the rest out, and start your next batch.
Would you mind posting your specific process that you use?