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Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > 2 Micron air stone
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Old 02-01-2013, 04:37 AM   #11
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Some years back I had a cheap aquarium pump that I somehow ended up with for free. I used it in a 5 gallon bait bucket. The deeper I dropped the stone the few bubbles. By the time it got to the bottom, no bubbles at all. The stone was probably about as cheap as I could find so was probably less restrictive.

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Old 02-02-2013, 12:56 PM   #12
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So I tried boiling the "stone" for :15, still unable to even blow air through it. Think of the smallest, toughest balloon you tried blowing up as a kid and were unable, that is what I have here. Certainly a bigger aquarium pump couldn't do it either. I guess it's either cheap throw away type of stones as suggested earlier or buying an O2 tank.

On to the the next dilemma....

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Old 02-02-2013, 01:45 PM   #13
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Quote:
Originally Posted by Flynz
So I tried boiling the "stone" for :15, still unable to even blow air through it. Think of the smallest, toughest balloon you tried blowing up as a kid and were unable, that is what I have here. Certainly a bigger aquarium pump couldn't do it either. I guess it's either cheap throw away type of stones as suggested earlier or buying an O2 tank.

On to the the next dilemma....
Ive been using the same stone for a couple of years. When it gets gummed up I first soaked it in PBW, then boiled and then soaked in star San and it was like new.

I do use a O2 bottle though..
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Old 02-02-2013, 01:52 PM   #14
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Wow, a .2 mu air stone? That's pretty small. How can you even see it?

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Old 02-02-2013, 05:39 PM   #15
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I can't blow thru mine.. but, when I hook it up to the small tank I got from HD.. it works just fine.. nice small bubbles. I've handled mine not realizing that tissue oils would affect it.. but, so far.. so good. Just realize.. 2micron pores are VERY tiny.. too small, IMO for an aquarium pump that's designed for a fish tank air stone. If you aren't using O2, you probably want a standard airstone.. not the 2 or larger sintered SS stone.

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Old 02-05-2013, 05:38 AM   #16
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I used my 2 micron with a 50gal aquarium pump for the first time this weekend and was surprised at what happened. I had good bubbles coming through as you can see in the first picture.



I watched it for about 5 minutes and then left it and came back 5 minutes later to find that it had created huge foam and was foaming out the top of my carboy.



I read somewhere that you should let the air stones work for about 15 minutes. I obviously had to stop mine at 10. I'm curious if others get this foam but I don't want to hijack this thread. I might need to start a new one with this foam thing.

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Old 02-05-2013, 11:00 AM   #17
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Foam is normal.

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Old 02-05-2013, 03:20 PM   #18
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Foam is normal.
Well that's a relief. I guess I did it right then except for walking away from it! Thanks for confirming.
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Old 02-06-2013, 01:59 AM   #19
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Quote:
Originally Posted by buzzno

Well that's a relief. I guess I did it right then except for walking away from it! Thanks for confirming.
Cheers to better beer!
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