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Old 06-14-2005, 04:29 PM   #11
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Originally Posted by hashbaz
Connect the PH controller to the pump on a powered diffuser/reactor. When the PH is low enough the controller turns off the reactor and the CO2 just bubbles up and out of the reactor and out of the tank.

I really think this plan will work except for one thing: can a 120V pump be plugged into a controller?
Problem is that you'd have to have a vent at the top of the CO2 reactor, or the built-up CO2 would airlock the powerhead, and it wouldn't work when it was powered again by the controller/timer.

Former advisor and planted tank geek...life's moved on though.
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Old 06-14-2005, 05:04 PM   #12
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I may be missing something, but DIY CO2 is not meant to hold pressure. Solenoid valves can not regulate pressure! Even if you have a generator (plastic container) that can hold it, what would happen when the solenoid opens again? It would burst the gas like an open ended birthday balloon. You would need a pressure regulator and a needle valve, but that's an inch away from a true pressurized system.

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Old 06-14-2005, 09:12 PM   #13
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the inch being the canister wich is not that expensive comparatively once you get all the other parts..LOL

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co2, diy, diy co2

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