wrote in message
ups.com...
pH controllers seem to be a waste of money for added complexity.



apparently you have never used one. They do not add extra complexity. They
make things 1000% percent easier and you know what your ph and co2 levels
are on a constant basis. Without the controller your ph will fluctuate as
will your co2 concentrations. Trying to get the bubble count "just right"
without a controller is much more complex and time consuming.

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Margolis
http://web.archive.org/web/200302152...qs/AGQ2FAQ.htm
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