Cerges Reactor Flow Direction - The Planted Tank Forum
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post #1 of 6 (permalink) Old 09-15-2017, 01:22 PM Thread Starter
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Cerges Reactor Flow Direction

Should the flow be up through the center pipe or down? I've read people that people set the flow different ways.
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post #2 of 6 (permalink) Old 09-15-2017, 01:32 PM
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Ive seen it run the other way, but typically this is how a Cerges works (not my img)



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post #3 of 6 (permalink) Old 09-15-2017, 01:44 PM Thread Starter
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Originally Posted by burr740 View Post
Ive seen it run the other way, but typically this is how a Cerges works (not my img)


Thanks! I'll keep researching to see if there any science to show one way is better than the other.
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post #4 of 6 (permalink) Old 09-15-2017, 02:05 PM
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I have built 3 different Cerges reactors for my 65 gal.

The first set up was a 10 inch housing with the water flow as marked on the filter - water flowed into the "IN" and out of the "OUT". With this set up just could not get the CO2 level that I wanted.

Reversing the flows did not help either.

Second set up was 2 x 10 inch Cerges filters in series. Water flow to the first Cerges was in the right direction and reversed in the second. With this I was able to achieve better results but not optimum.

Third set up was a single 20" housing with water flow in the right direction. Took a lot of trial an error with flow rates and back pressure to get the result I wanted. I can now get a 1.0 pH drop in about 75 mins.

My set up is for a 65gal tank with a 20 gal sump. I have seen other members running 10" Cerges reactors successfully with canister filters. Water flow direction is a debate. I would try both directions and see which one works best for you.

Also have you considered a RG reactor?
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post #5 of 6 (permalink) Old 09-15-2017, 02:23 PM
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RG all the way. Cerges internal volume is too small to prevent all CO2 from dissolving unless flow is just a trickle.
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post #6 of 6 (permalink) Old 09-15-2017, 02:25 PM Thread Starter
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Quote:
Originally Posted by OreoP View Post
I have built 3 different Cerges reactors for my 65 gal.

The first set up was a 10 inch housing with the water flow as marked on the filter - water flowed into the "IN" and out of the "OUT". With this set up just could not get the CO2 level that I wanted.

Reversing the flows did not help either.

Second set up was 2 x 10 inch Cerges filters in series. Water flow to the first Cerges was in the right direction and reversed in the second. With this I was able to achieve better results but not optimum.

Third set up was a single 20" housing with water flow in the right direction. Took a lot of trial an error with flow rates and back pressure to get the result I wanted. I can now get a 1.0 pH drop in about 75 mins.

My set up is for a 65gal tank with a 20 gal sump. I have seen other members running 10" Cerges reactors successfully with canister filters. Water flow direction is a debate. I would try both directions and see which one works best for you.

Also have you considered a RG reactor?

Thanks for the feedback!! No, haven't looked into RG reactor, but definitely will.

Quote:
Originally Posted by ChrisX View Post
RG all the way. Cerges internal volume is too small to prevent all CO2 from dissolving unless flow is just a trickle.
Chris,
I'm new to planted tanks so please pardon my ignorance, but isn't the goal to have the CO2 dissolved in the water before exiting the reactor? Thanks!

Last edited by Darkblade48; 09-16-2017 at 08:35 AM. Reason: Please use the edit function for back to back posts to keep threads cleaner
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