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Old 04-23-2013, 01:24 AM   #11
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Tried the balloon trick. It didn't have enough pressure in the morning to push the co2 through the diffuser. But am still trying different things.
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Old 04-23-2013, 01:28 AM   #12
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A rig set up like this can't build pressure as long as the balloon can expand, and once the balloon can't expand it breaks. You need to run it into a powerhead, filter, or some other setup that doesn't require pressure.
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Old 04-23-2013, 01:41 AM   #13
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I had it that way before but had to remove the powerhead due to my new stock not being able to handle that much current. I did though end up working a different way out with multiple t connectors check valves and single in &out gang valves.but it now builds enough pressure and can shut it off at night without loosing too much pressure at night
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Old 04-23-2013, 02:37 PM   #14
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I have never had any problems with the balloon reducing pressure in the line. Of course I have it hooked up to a power head intake. I just open the check valve all the way and the CO2 comes gushing out. I then close the valve about halfway to reduce how much is getting into the tank. If I leave it all the way open my fish start gasping for air. You can also gently squeeze the balloon and it will get the flow started.

Try adding a sponge to the outflow. That is what i had to do. Otherwise it knocked the fish around. Here are some pictures of how I am diffusing the CO2.
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Old 04-23-2013, 02:48 PM   #15
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I had mine running into a power bit had to remove due to reason stated above and I needed it switched to my 55 as a circulation pump then put into the intake of my filstar bit my wife didn't want any rubber or soft plastic parts getting eaten up by the co2 so I bought a glass diffuser added an extra bottle and plasiwelded all my connecters to the caps and it works like a charm.
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Old 04-27-2013, 10:08 PM   #16
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Update on system. Found out that the 2 way diverter valves will not hold up to the CO2. The hard plastic fell apart at the outlet that the CO2 passes through. I did find another way to slow down or shut off the flow though. It is a pinch control that is used on I.V.s in hospitals. It goes over the tubing not inside it. I
found this on an online aquarium supplies site. It was $13 though. I did a quick internet search and found them on Amazon for $5. I am going to order a couple of these and try them out. I also am ordering some inline air control valves and see how that works. Right now I am using a close pin to pinch the tubing to control the flow. Can't get any more red neck than that. LOL
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Old 04-29-2013, 05:29 PM   #17
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Hi
Do not use silicone tubing but use clear high pressure tubing.
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Simon Yee
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