Re: [GSAS-Member] CO2 Question

[macker <macker@gmail.com>]

Erik, Paul

That works too, a steady bubble. Never worked well for me bc we travel a
lot, 4 day stretches, etc. One thing gets out of balance, and Ive seen some
messy things happen. Maybe its just my controller or something, you guys are
smarter than me, but it regulates the PH 24/7 to 1/100th of the set PH,
turning off or on, basically a digital tank that can correct its own errors
without human interference, and time of day. It smoothes out a single
fluctuation instantly.

I have the Dupla PH Control alpha. Didnt get around to it yet but yes ill
download the talk.

Paul: can contact you offlist, but still have a full co2 tank and the other
pieces to a full PH set, which im lowering prices just to get out of house
before my travels. Hate to part out just teh controller, and to sure if the
connectors are standard, but might consider. I doubt they are.

Also, if anyone wants it you can pay in installments, just too busy to post
online and sell.

I still like my idea though of filtering all your tanks fast enough and have
all the multi-tanks water end up in one place, then use a controller to
adjust as necessary. If that cycle repeast ast enough not sure why that
wouldnt be a great option, unless it comes down to cost which is typically
the #1 or 2 factor.

On Mon, Oct 19, 2009 at 10:32 AM, Erik Olson <erik@thekrib.com> wrote:

> Macker,
>
> In the post-Dupla world, most folks these don't use pH-based controllers
> to regulate the CO2, but rather just adjust the flow of the needle valve
> to give a good constant rate.  I think even Amano's stuff doesn't use a pH
> controller. The solenoids are usually just hooked to timers to turn the
> CO2 off at night.
>
> Definitely download Paul's talk from last week -- it's a good watch for
> catching up...
>
>   - Erik
>
> On Mon, 19 Oct 2009, macker wrote:
>
> > 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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>
> --
> Erik Olson                                                        Sent from
> my crusty old Linux box
> erik at thekrib dot com
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