Co2

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01 May 2017 12:12 #1 by robert (robert carter)
Co2 was created by robert (robert carter)
Hi , my co2 system which is fed my an in line system just before my canister filter seems to do funny things that it will quite often just start making noise and then a lot of bubbles come out of the filter return into the tank . What i cant understand is the extingushers was half refilled before xmas , as sh ran out of co2 , and although it runs at 2 bubbles a second for 7 hours a day the cylinder still feels fairly full . Have today just swapped it onto a newly filled cylinder , so will have to wait until it comes on . Just wondering was it a problem with the regulator ?

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01 May 2017 13:31 #2 by Jonlate (Jonathan Lait)
Replied by Jonlate (Jonathan Lait) on topic Co2
You feed co2 BEFORE your filter?
Doesn't that just fill your canister with air, and then it will have to have a hissing fit to expel it, to make room for the water.
Wouldn't it be better to feed it after the canister filter?

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01 May 2017 16:37 #3 by robert (robert carter)
Replied by robert (robert carter) on topic Co2
I knowing nothing about co2 systems when i installed it was advised to do it that way , being told i would get a better absorbsion of co2 into the water that way , but the current issue has only happened in the last few weeks

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01 May 2017 20:29 #4 by robert (robert carter)
Replied by robert (robert carter) on topic Co2
Do you think i should change it over , after all is only a matter of swapping the pipework over so that the co2 goes in on the return hose instead of the input ?

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01 May 2017 22:55 #5 by iain54 (Iain Minchin)
Replied by iain54 (Iain Minchin) on topic Co2
It should be on the outlet line if it's on the inlet line it fills the cannister with gas and causes impeller noise.

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02 May 2017 12:51 #6 by Jonlate (Jonathan Lait)
Replied by Jonlate (Jonathan Lait) on topic Co2
I know nothing about co2, but it does make sense that it will fill your canister with air.
Another point to ponder is, is your outlet pipe above or below the water?
If it's below then fine the co2 rich water will be returned. But if it's above, then will you be venting off the co2 when it hits the water and causes disturbance?
I don't know, maybe a planted tank expert can help!

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02 May 2017 13:38 #7 by robert (robert carter)
Replied by robert (robert carter) on topic Co2
Thanks all for your help on this one, i think i have it solved , spoke to Darren in sh , he said yes the co2 infuser is best on the inlet pipe to the filter this increases absorbtion of the gas into the water , the problem is that the difusser disc has become dirty and partly blocked , only allowing big bubbles of gas into the filter that then get trapped causing the noise and flury of large bubbles out of the intake pipe . I didnt ever realise there was a disc in this type of defuser. So will get a new disc at the weekend . Thats the thing i love about this hobby you learn all the time . Thanks Robert

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