Homebrew PCBs

Yip, that's the one. I asked the clerk what it was made of but she
didn't have a clue (or seem likely to get one anytimew soon, either).

I thought I would just get some more of the surplus tygon tubing I am
using now to feed the sparger. This is the yellow tubing intended for
automobile use, like gasoline etc., but it is only 50 cents a foot. I
thought I would put some holes in it with a hot needle and plug one
end with some PVC rod. If that fails I will follow up on your
suggestions which are excellent, as usual.

Thanks,
Grant
 
--- In Homebrew_PCBs@yahoogroups.com, Adam Seychell
<adam_seychell@y...> wrote:
> 
> 
> grantfair2001 wrote:
> > After about 24 hours, the 12" airstone is mushy...
> 
> Damn, well there goes that idea out the window.
> Was this the one you got ?
> http://www.quickgrow.com/images_shop/aqua_fizz_12.gif
> 
> I spent some time looking for air stones and gas dispersion 
> tubes. The closest thing I found was the porous hose used for 
> irrigation. The stuff I got is 1/2" ID and made from recycled 
> plastic and rubber, and appears to be acid very resistant. I want 
> to know what people use industrially.
> 
> For the lab you can get fritted glass on the end of a tube. But 
> these are expensive.
> 
> Try phoning hydroponics stores because they may have bigger range 
> and variety. Ceramic air stones are commonly available, which I 
> have never tried myself. Other people to try are in the water + 
> sewage treatment industry. They may able to help. Just ask for 
> fine bubble air diffuser.
> 
> Here is some stuff I found on the web.
> 
> http://southernaquaculturesupply.com/catalog2002/aeration/019.shtml
> http://www.redvalve.com/Products/Air_Diffusers/Tubeflex.html
> http://www.netpets.com/fish/reference/saltref/diffuser.html
> http://www.vertexwaterfeatures.com/air6.html