Re: [GSAS-Member] CO2 Question

["Paul M. Wallace" <pwallace@u.washington.edu>]

Dear Macker,

A splitter increases the number of "taps" on a tank so you can meter the
needle valves to individually set each tank.  The controller however does
not scale as you need a controller for every system.  You could however run
a controller on one tank and 24/7 on the others in whatever combination you
desire.

Could you please send me the price of the controller offlist?  My wife is
unemployed so money is tight but I do love my toys and if I remember you
have 2 digits (ie 7.xx) vs. the standard one significant figure (ie 7.x).

-Paul

-----Original Message-----
From: gsas-member-bounces@thekrib.com
[mailto:gsas-member-bounces@thekrib.com] On Behalf Of macker
Sent: Monday, October 19, 2009 10:15 AM
To: Greater Seattle Aquarium Society member chat
Subject: Re: [GSAS-Member] CO2 Question

Interesting thread. I have a digital co2 system for sale if anyone is
interested. Im a little confused though.

So, multiple solenoids for multiple tanks, all going off one central
point... Is it able to keep the co2 to the optimal level individually for
each tank, based on the #of plants/fish? Thats pretty sweet if true. I don't
see how it can control a slight release on say, one tank, but stronger as
another tank just as an example.

Or, is it better to have all your tank water eventually filtered though 1
primary place, then take PH readings from there? You couldn't control the
exact Ph per tank, but i guess it would be even across your 'network' of
tanks.

I don't have a tank anymore, as wife and me are leaving oversees for a moth
in december, but will. I manage and secure datacenters and like a central
point of control w/ redundancy, same w/ tanks or anything I would love to
know about managing all that for multiple tanks. Maybe single controller
units handle multi tanks?

My setup is Dupla, I just can't see how its scalable for anything other than
one tank.

- macker

Check valves are designed to stop flow one direction when they see a
> specific back pressure.  If that back pressure is not met they can weep
> fluid in the reverse flow direction.
> Clay Hess
> 787 Fuselage Systems Integration Manager and Team Leader
> 425-931-4322
>
> ----- Original Message -----
> From: gsas-member-bounces@thekrib.com <gsas-member-bounces@thekrib.com>
> To: Greater Seattle Aquarium Society member chat <gsas-member@thekrib.com>
> Sent: Mon Oct 19 09:16:18 2009
> Subject: Re: [GSAS-Member] CO2 Question
>
> Ah that must be what happened to me. Because I turned off my CO2 at night,
> water would creep back sometimes. The only issue is, is that not what
check
> vavles are for, to stop water?
>
> On Mon, Oct 19, 2009 at 8:42 AM, Doerr, Jesse <Jesse.Doerr@fei.com> wrote:
>
> > My experience with plastic check valves is that they work fine for CO2
> > until they get wet.  Once water gets onto them, it tuns into an accid in
> > the CO2 and the plastic starts melting away.
> >
> > Jesse
> >
> > (running DIY pop bottle CO2 infrequently and irregularly)
> > _______________________________________________
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> > GSAS-Member@thekrib.com
> > http://lists.thekrib.com/mailman/listinfo/gsas-member
> >
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