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Best way to diffuse CO2 with a canister filter?

Discussion in 'CO2 Enrichment' started by kevinmichael77, Dec 31, 2016.

  1. kevinmichael77

    kevinmichael77 Guru Class Expert

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    Im trying to figure out what filter to run for my 120p build. Im thinking of running the Eheim 2262, which is a beast, but not sure the best way to run the CO2 if I go canister.


    Whats everyone doing in this department, or what are your suggestions?


    thanks and happy New Years!!
     
  2. rajkm

    rajkm Article Editor
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    Build a reactor. Bigger the better.
     
  3. kevinmichael77

    kevinmichael77 Guru Class Expert

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    Does it affect flow at all?
     
  4. Christophe

    Christophe Subscriber
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    The reactor will affect flow from a canister, but from the looks of it, an Eheim 2262 is a big, capable filter, a bit oversized for a 120p. Should be OK as long as you keep the hose diameter as large as possible, and mind the length and number of angles in the hoses.
     
  5. kevinmichael77

    kevinmichael77 Guru Class Expert

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    I will most likely need to reduce the hose sizes in order to use lily pipes. I don't think they make the glass/steel pipes to fit the 2262 hose sizes. Is this a problem?
     
  6. Christophe

    Christophe Subscriber
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    I don't know lily pipes all that well, but I think the biggest they make are 16mm or so. That small diameter would likely restrict the flow you'd get out of the canister. To me, it sorta kills the point of having the bigger canister.


    I'd go with bigger intake & return plumbing to maximize the flow, that's what's going to drive the health of your tank.
     
  7. kevinmichael77

    kevinmichael77 Guru Class Expert

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    There's part of my issue. Aesthetically I can't stand the sight of eheimes plumbing. It's a huge eyesore for me.
     
  8. Christophe

    Christophe Subscriber
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    I'd agree, their green stuff is pretty rough.


    There are better options for building your own intakes and returns. For example, Bulk Reef Supply carries PVC pipe and fittings in various sizes and colors. Even more cheaply, standard PVC from any hardware store can be painted with Krylon Fusion, once cured it's aquarium-safe. Oversizing your pipes a bit can help minimize the friction loss, even if you throw in a few 90 degree bends.
     
  9. PhilipS

    PhilipS Lifetime Members
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    Run a glass straw (4mm) down to the filter intake. 1-2 bubbles per minute.


    A pH controller will save a lot of co2. My 5lb is going 8 months.


    In case you want a little more flow per Watt, That Eheim impeller should be compatible with larger models in the same family.
     
  10. kevinmichael77

    kevinmichael77 Guru Class Expert

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    My thinking now is that I might drill the tank and run a big reactor and inline heater. This will reduce some of the flow of this beast of a canister and I'll be able to hide the plumbing a bit. Never drilled a tank before or know if it's efficient to drill witha canister.

     
  11. PhilipS

    PhilipS Lifetime Members
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    Skip drilling. Use a black pvc Y-insert to split the canister output to two glass pipes. The turbulence will be less forceful on the plants.


    I have an Eheim 2213 1/2" in/outputs. Output is split with a 1/2" Y-fitting. The two hoses then are 3/8" attached to mini violets on a 36" long tank. The water column is always moving. Only one filter intake. Hot water softens the hose to stretch onto the next larger hose insert, Wheaties may be necessary.


    Two filter intakes with screens could lessen the amount of fish-n-shrimp fry in the filter.
     
  12. kevinmichael77

    kevinmichael77 Guru Class Expert

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    The problem is that they don't make big enough lily pipes for this particular canister. Pretty sure it's 1" in diameter.

     
  13. jb1974

    jb1974 Junior Poster

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    We did our own pvc plumbing and bought a water filter body for a DIY reactor...running it inline with our 2262. It reduces the flow a bit compared to our other 2262 which does not have a reactor on its own loop.


    We have no problem keeping 30 ppm Co2 in a 190g with this set up.
     
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