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Re: An Idea That Im Working On..

In a message dated 5/14/1999 2:49:29 AM Central Daylight Time, 
Aquatic-Plants-Owner at actwin_com writes:

<< Date: Thu, 13 May 1999 23:24:36 -0400 (EDT)
 From: Alexander Mills <amills01 at nimbus_ocis.temple.edu>
 Subject: An Idea That Im Working On..
 IM toying with the idea of a totally automated aquarium system with
 computer controlled CO2, Lighting, Water quality and Temperature. This
 would be accomplished with the use of a controller similar to those used
 in the HVAC industry for the automatic control of indoor air quality. Has
 anybody ever attempted this type of thing before,(the control cards tend
 to be expensive), and does anybody have any experience with the sensors
 that are available for the various organic compounds that we are concerned
 with?(these sensors would control a r/o unit).
 	any input?? >>

From what I have seen sensor prices your talking about an extremely costly 
From my estimate if you can find some of these sensors for under $200 each 
give us your source.