DIY Reactor Question - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 01-15-2010, 07:26 PM Thread Starter
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DIY Reactor Question

This is the CO2 reactor that I made. It's 14" long, 2" pvc pipe. The grey barb fittings are for 3/4" tubing and the 1/8" barb elbow is the CO2 input.
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In another DIY reactor thread I noticed that someone had drilled a hole (1/8", i guess) in the end that would be facing up, inserted a small tube, and said that it would be hooked to a valve so excess pressure/gas could be released. I had'nt thought about that fact. Would others recommend doing the same thing? How often would you have to release that pressure? Thanks.
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post #2 of 4 (permalink) Old 01-15-2010, 08:29 PM
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You don't need that extra hole on the top but it does help. It makes priming the reactor a whole lot easier. Also, you can tee that line off and recirculate the built-up co2 gas. You can either have that line go to a powerhead and have some mist go into your tank or back to the pump/filter powering your reactor. I usually do the mist option myself.
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post #3 of 4 (permalink) Old 01-15-2010, 10:09 PM Thread Starter
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Ok, just cause I'm an idiot, I need you to explain that to me
Are you saying that I would run the "pressure relief" tube BACK into the tank? I could run it up into a powerhead or double it back into the fliter?
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post #4 of 4 (permalink) Old 01-19-2010, 03:36 AM
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Quote:
Originally Posted by Guns286 View Post
Ok, just cause I'm an idiot, I need you to explain that to me
Are you saying that I would run the "pressure relief" tube BACK into the tank? I could run it up into a powerhead or double it back into the fliter?


Well, kinda sorta. I would have that "pressure relief" line connected to a tee. One of the output of the tee would go into the filter/powerhead. The other line on the tee would just have some sort of shut off valve. When you need to re-prime your pump for whatever reason, then just open up the valve and let all the gas out. There shouldn't be much gas build-up anyways because that is what the other line going into your filter is for. It is there to send built up gasses back through the reactor. Or, if you send it to a powerhead, you send up the gasses as mist directly into your tank. I would put another valve on this line so that you can somewhat regulate how much co2 is going back into the tank.

Here's a few links for you:
Dual Venturi Reactor
Diy Needlewheel
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