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

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


wrote in message
...
1) How long can I expect my 5 lb CO2 cylinder to last at a rate of about

1
bubble/sec, 24 hrs/day.


As of today its 5 months. I dont see any pressure change and hope for one
more month. Mine 2 bubble/sec

2) What are people's favorite brands/sources for controllers.


http://www.dlink.org/aqua/CO2.html

3) Is there an inexpensive but reliable controller out there that I

should
consider?


See the link above.

4) Are the solenoids reliable, or are they failure prone?


I dont use any.

5) How much of a hassle is controller calibration, and how often do you
have to do it? Are some easier to calibrate/maintain than others?


NONE.

--
Thank You

Dominic
http://www.dlink.org/aqua