Question, I want to start some CO2 tomorrow so I am going to make 2 DIY
bottles for my 75. I saw on this site,
http://www.geocities.com/Heartland/H...37/index.html, that the airtube
can be stuck in a powerhead. It seems like since the "air port" on the
powerhead sucks air in, it would also suck from the CO2 bottle. Will the
check valve prevent this? I would like to do this, but need some more
experienced person to tell me about this method first.

thanks.

"Jim Miller" wrote in message
...
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

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"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?