[APD] Re: Aquatic-Plants Digest, Vol 21, Issue 12

["Robert Flory" <wyogeo at astound_net>]

> Message: 6
> Date: Sun, 08 May 2005 19:51:18 -0700
> From: Rex Grigg <rex at rexgrigg_com>
> Subject: Re: [APD] Yeast CO2 in 55 gal tank update
> To: aquatic plants digest <aquatic-plants at actwin_com>
>
> I don't know why everyone goes to such extremes to get a seal on a
> plastic cap.  I have made PVC reactors and several DIY CO2 systems
> several DIY bubble counters.  Every one of them had the tubing going
> though a hole that was a couple of drill sizes smaller than the OD of
> the tubing.  Every one of them sealed gas and liquid tight.  Everyone of
> them is still working great.
>
> The trick is to cut the tubing at an angle, thread it though the small
> hole and pull it though with pliers.
>
> There is no need at all to mess with any kind of sealants, glues, epoxy,
> or silicone.
It is only a problem if the system operates under pressure.  If you are not 
forcing the CO2 through a stone you don't have leaks.  I run under a slight 
vac, I don't even have to screw the lids on tight.

Bob


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