controlling the output by restricting the flow isn't a great idea for a
variety of reasons. you're better off adjusting the co2 concentration by the
efficiency of your diffuser or perhaps the size of your bottle.

btw, adding too much yeast at the start will get production started at a
high level and depending on your brew and yeast type cause a quick fall off
thereafter. yeast population will grow over time so adding too much at the
start is a bit of a waste. use the minimum necessary to start co2 production
at a comfortable level.

jtm

--
Remove NOSPAM for email replies
"SlimFlem" wrote in message
news:YHlR9.548545$P31.182441@rwcrnsc53...
What is the best way to control the output of bubbles on DIY units? Don't
you need to watch your PH levels and adjust bubble flow? How would you do
it with this type of setup?