Question about cerges - The Planted Tank Forum
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post #1 of 35 (permalink) Old 02-01-2015, 12:10 AM Thread Starter
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Question about cerges

So I got the cerges running with co2 entering the chamber and then push up through the long tube to exit. I tried it the other way and could never keep the large bubbles inside the long tube enough.

But it's running good now but there's a large air pocket at top of chamber. Is it safe to leave it like that? Would I lose any co2 or prevent new co2 from dissolving?


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post #2 of 35 (permalink) Old 02-01-2015, 12:18 AM
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I think so. I have mine the same way. The CO2 should dissolve in the water rather quickly after the CO2 cuts off. Just don't pump in more CO2 than the reactor can dissolve. Having said that, i have about 5-6 BPS in my Cerges.
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post #3 of 35 (permalink) Old 02-01-2015, 12:41 AM Thread Starter
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Well mine is a 210 gallon...there's tons of bps and it's a 20".


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post #4 of 35 (permalink) Old 02-01-2015, 12:56 AM
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Do you see any bubbles exiting the reactor? If not, the reactor is doing it's job.
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post #5 of 35 (permalink) Old 02-01-2015, 12:59 AM Thread Starter
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No. There's none exiting.
Just worry about the air pocket if it'll waste co2


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post #6 of 35 (permalink) Old 02-01-2015, 01:01 AM
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nah, normal
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post #7 of 35 (permalink) Old 02-01-2015, 01:36 PM
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The air pocket just develops on some setups. That is why some people like to make Cerges out of filters that have the purge button. I hear some people are able to turn the filter upside down to get the air to out. Not everyone has theirs setup this way. I install bypass valves on my cerges to divert the extra flow away from the reactor. This pretty much takes the place of the purge.

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post #8 of 35 (permalink) Old 02-01-2015, 02:30 PM Thread Starter
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Well I have the purge button...I do use it to purge, is it just purging air?


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post #9 of 35 (permalink) Old 02-01-2015, 04:39 PM
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It isn't air, it is CO2. So long as the water and CO2 are churning then the reactor is going to be working fine. My 20" reactor was half full of CO2 a few weeks ago and wasn't making annoying sounds or burping bubbles into the tank [turned the gas down a bit though!]. Just turn off the gas so there aren't any CO2 bubbles in the reactor maybe an hour before lights out.


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post #10 of 35 (permalink) Old 02-03-2015, 12:51 AM Thread Starter
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So I do turn off co2 an hour before lights go out. Try it again next day, there was like1/4 of water in cerges...rest was filled with co2...Does psi have anything to do with this? I had it at 30 psi in regulator. I will try lowering it


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post #11 of 35 (permalink) Old 02-03-2015, 01:25 AM
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i think 30 is way to high for a reactor, i run mine at 8-10psi
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post #12 of 35 (permalink) Old 02-03-2015, 03:54 AM
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Did you fill it with water before turning on your filter for the first time? Like did it go from full down to 1/4 or did you turn on your pump/filter and it only filled it 1/4 of the way?
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post #13 of 35 (permalink) Old 02-03-2015, 11:48 AM Thread Starter
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Quote:
Originally Posted by Dead2fall View Post
Did you fill it with water before turning on your filter for the first time? Like did it go from full down to 1/4 or did you turn on your pump/filter and it only filled it 1/4 of the way?
well i have a pump pumping water into it, why do I need to fill it with water? I purge it and it went to full and after co2 period, next day, it was down to 1/4. Then I turn on pump to start reactor and it stay at 1/4 until I purge which would make it full again..........

is this suppose to work like that?


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post #14 of 35 (permalink) Old 02-03-2015, 01:14 PM
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I asked because I remember my first time running mine I let my canister fill the sump of the house filter housing and it only would fill it 1/4 of the way until I burped it. This doesn't seem to be your issue as you've burped yours. If it's 3/4 full of co2 at shut off time I'd maybe consider shutting off your co2 earlier or possibly even turning it down some.

The psi really doesn't make much of a difference in my opinion as it's only 30psi or whatever you set it at until it gets to the needle valve.

Is your needle valve setting unchanged since you were running the rex reactor?
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post #15 of 35 (permalink) Old 02-03-2015, 02:18 PM Thread Starter
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Quote:
Originally Posted by Dead2fall View Post
I asked because I remember my first time running mine I let my canister fill the sump of the house filter housing and it only would fill it 1/4 of the way until I burped it. This doesn't seem to be your issue as you've burped yours. If it's 3/4 full of co2 at shut off time I'd maybe consider shutting off your co2 earlier or possibly even turning it down some.

The psi really doesn't make much of a difference in my opinion as it's only 30psi or whatever you set it at until it gets to the needle valve.

Is your needle valve setting unchanged since you were running the rex reactor?
I have been adjusting needle valve to have enough co2 for a 210 gallon. I have been running only cerges.


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