co2 into the inlet of the canister

**limz_777** · 28th Sep 2011, 17:39

do you feed co2 into your canister for better adsorption and any abnormal behavior to the live stocks ?

**Kiatster** · 28th Sep 2011, 17:43

The co2 will dissolve better if fed into inlet however it will also cause air to be trapped in the filter. Livestock will only be affected if co2 level is too high. Use a drop checker to be sure.

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**|squee|** · 28th Sep 2011, 18:45

I did that once, filter clogged up. What Tom Barr used to suggest in the past was having a modified powerhead with the CO2 tubing inserted near the impeller and placing it in your tank. Another option is to buy one of those high pressure in-line diffusers (I'm using one).

**limz_777** · 29th Sep 2011, 18:00

@ kiatster , how long you been you been running this system ?

@ squee , what canister filter did you try it with ?

**tawauboy** · 29th Sep 2011, 22:45

it is not advisable to inject co2 into your canister. it may cause air-lock.
if there is no consequence, most canister maker will advertise this 'feature'.

**Apistoinka** · 29th Sep 2011, 23:12

I had been doing that too... So what's the best way to distribute the co2 evenly into the tank??? Where to place the co2 diffuser???

**limz_777** · 30th Sep 2011, 16:50

there is a article by wayne sham of cau about a skimmer mod for eden 501 , there is a inlet which feed co2 hence i am quite curious about it since beneficial BB enjoy o2 more then co2 , guess there is no right or wrong way if it works .

**|squee|** · 30th Sep 2011, 19:04

Originally Posted by limz_777

@ squee , what canister filter did you try it with ?

I've used the Atman 3335 and the Atman CF800. But they clogged up because the CO2 wasn't dissolving fast enough, therefore it's not advisable to follow me.

Why don't you try the Tom Barr method I mentioned a few posts back? Although I haven't tried it personally, but it will be what I'll do if I had a 3ft or bigger tank.

Originally Posted by Apistoinka

I had been doing that too... So what's the best way to distribute the co2 evenly into the tank??? Where to place the co2 diffuser???

Personally all I've had were 2ft tanks, and I use diffusors placed near the outlet. The bubbles spray all over the tank and maximise their exposure.

**limz_777** · 30th Sep 2011, 19:32

Why don't you try the Tom Barr method I mentioned a few posts back? Although I haven't tried it personally, but it will be what I'll do if I had a 3ft or bigger tank.

my set-up is a 30 cm cube , as i dont intend to use chiller ,only fan , i think a small powerhead will have heat issues too .

is tom barr method a co2 reactor ?

**Kiatster** · 2nd Oct 2011, 03:21

I used to inject into the canister to maximize the co2 diffusion, but it caused burping / air-locked my filter, so now im using inline-diffuser instead. I would recommend it if you want to fully / almost fully dissolve the co2 injected into the tank.

**KITTY** · 2nd Oct 2011, 09:50

What is online diffuser ? Can show the photo? I always use injury co2 to diffuser n riccia will pearl.

**limz_777** · 2nd Oct 2011, 15:31

i tested it on the shiruba canister just sucking partial c02 from the normal diffuser , c02 does accumulate inside and there is intermittent large release of small co2 gas , no airlocks so far , i will just stick to this method first maybe next time get a inline diffuser , thanks for the feedback guys

**BFG** · 2nd Oct 2011, 17:50

Why take the risk? The motor compartment might heat up as no new water is flowing in to lubricate that area. The water temperature in the canister might rise that the beneficial bacteria might perish. When you try to rectify the situation, you might introduce a toxic soup into your tank. Depending on your luck, you might get away scot free or all your live stock will not survive. You might catch the air lock as it happens or worst it happen when you leave for school or work. Murphy law will catch up to you sooner than later.