On Sun, 06 Nov 2005 08:37:50 GMT, Justice
wrote:

I am planing a projetct to manage a fish tank. I want to mesure the ph,
temp, nitrate, nitrite and amonia levels. my question is where would I
find such sensors and how would I conect them to a pc running linux.
Any help would be apeciated.

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http://electrodesdirect.com/section_...y_id/16/type/4

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John Fields
Professional Circuit Designer