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[APD] Re: CO2 Questions
However, depending upon the volume of water, you would you not have to
inject more CO2 than can be disolved at only one point?
Nope, won't happen. If you have a very low-efficiency CO2 reactor you might
find that you can't maintain the pH level you want though. All you'd need
in a common filtration system would be a larger CO2 reactor capable of
handling the load you present to it. I would suspect one of the counter
current power head driven units would work well in such an application. The
water circulation in a centralized system will distribute the CO2
concentration over the entire water volume of the system, so you won't
reach saturation at any one point until you saturate the entire system.
In any common filtration system what you're really doing is bringing all
the normally distributed hardware you use to maintain the environment(s) in
your aquaria and centralizing it all. This means instead of thirty 50 watt
heaters you maybe only need one 1000 watt heater. And instead of 30 small
powerheads, you maybe only need one centrifugal pump. What you are doing is
arranging your equipment such that you achieve economies of scale (must...
not... talk about work... In telecommunications this is *all we do*). A
single 1000 watt heater will be more economical to operate than will thirty
50 watt heaters, and it will likely do a better job too. Also, reliability
is improved with using a single large unit over many small units (in terms
of failures over time, not tolerance of failures -- they are two different
A centralized system has one major advantage or disadvantage, depending on
what you are trying to achieve: water chemistry in *all* tanks will be kept
very nearly identical since the water volume is effectively shared with all
other tanks. If you are trying to keep the same types of fish/plants in
every tank, this will make it easier and also make the system more stable
chemically due to the larger water volume, and it will simplify maintenance
(one massive water change handles all 30 tanks at once).
The disadvantage is that all the tanks will have near identical water
chemistry -- you wouldn't be able to keep one tank's water chemistry
different from the others without removing that tank from the centralized
system. Also, you *really must* quarantine *everything* new before
introducing it into the system since the centralized system has the one
major drawback of being capable of quickly spreading disease from one tank
to *all* the others, automatically.
UNIX Systems Administrator
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