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Old 20-04-2003, 07:25 AM
Richard
 
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Default How long does 5lb CO2 Tank Last/ pH Controller source


"Henry" wrote in message...
Perhaps I am missing something, but I saw nothing about pH controllers

on
the link you provided. I am all set as far as regulators, needle valves

etc.
are concerned.

I am looking for information about pH controllers which will drive a
solenoid to turn the C02 stream on and off as needed to maintain a

stable
given pH (which in my case will be about 7.0, which will provide me with
optimal C02 concentration).

---- Henry



While there are many good suppliers out the

You might try:

http://www.automatedaquariums.com/index.htm
http://www.automatedaquariums.com/h_981411.htm
http://www.automatedaquariums.com/h_sys.htm

Our personal experience with Milwaukee meters has not been good, perhaps

it
was user error. We have had good results with Hanna, though others have
not.

Many people set their CO2 up without a doser/controller using a bubble
count/target pH method. I simply had a Pinpoint pH monitor and adjusted

the
surface disturbance vs. incoming CO2 to hit our target range.



My apologies, i see you are already using bubble count, just found your
original post...

Of those i am aware of, calibration should be once a month. Electrode
replacement 6 to 18 months.

Also: http://www.reeffanatic.com

I have done business with both AutomatedAquariums and ReefFanatic and can
recommend both.