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Discussion Starter · #1 ·
i got a 325 liter aquarium i want co2 on. Havent got anything co2 equipment yet.

I can read that an external co2 reactor is the best but i dont have an external canister and i do not want one.
Im thinking of getting an eheim compact+ pump mounted internal behind the background and then connect the reactor on the outside.
Would that work or is it just a no go??

Also what reactor can be recomended if im going to make one myself??
 

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With CO2 injection you will probably use a reactor inline, or a diffuser of some sort in the tank. The diffuser option will put CO2 bubbles in the tank. It will be less efficient at dissolving the CO2 and of course the bubbles will be visible.

This is a decent compilation of the methods available to you:
http://www.plantedtank.net/forums/showthread.php?t=423713

If I was dealing with a tank as large as yours I would definitely consider a canister filter with a reactor inline. If you already have your filtration covered then you could consider an additional smaller canister filter just for the purpose of dissolving CO2.
 

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Even better, for that tank size. An external sump with wet/dry filter would work at best. Them you can put all the pumps you want inside the sump, out of your tank.
 

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Discussion Starter · #4 ·
Thanks. But both suggestions are no go. Dont have room under the tank for sump and i dont want a canister filter, dont have room for it either. Next tank im getting i want a sump. I also sleep very close to the tank so dont need more sound from it.
 

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Discussion Starter · #7 ·
I got the external filter and i dont think it would be capable to use with a co2 reactor. Its also noisy

Is it possible to drop the pump inside and use it with an external pump standing beside the canister, like the eheim compact+ or something like that??
 
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