DIY PH Regulator - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 12-23-2005, 05:05 PM Thread Starter
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DIY PH Regulator

Has anyone made a DIY PH Regulator.

Where can you get cheap PH sensors?

Hook up the PH sensor to a micro controller and connect that to control the CO2 solenoid.

You might be able to make a PH controller for the cost of the sensor plus $20 to $50. Maybe even cheaper if you use a PIC micro controller.
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post #2 of 3 (permalink) Old 12-24-2005, 04:40 AM
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post #3 of 3 (permalink) Old 12-24-2005, 06:03 AM
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This may be TOO cheap, but:

http://www.thekrib.com/Plants/Fertilizer/
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