Will CO2 diffuser placed at the filter inlet maximise contact time with water?

[sateman]

I am wondering if the CO2 diffuser is placed at the filter inlet, will it not allow the gas to have more contact with water as it takes time to travel into the canister before going out into the tank again?
What about the effect on BB in the filter? Will sudden direct concentration of CO2 gas in the canister hamper BB Growth?

[Neondagger]

I not very sure. I got a question also to add on to this thread. Would the co2 bubble get stuck in the filter? end up no co2 lol.

[felix_fx2]

I not very sure. I got a question also to add on to this thread. Would the co2 bubble get stuck in the filter? end up no co2 lol.

Filter air choke will come 1st if bps is high.
Then filter spoilt.

[fotoudavid]

No. Some actually managed to attached to outlet piping. If co2 travel to canister will result in air trap in canister.

[felix_fx2]

No. Some actually managed to attached to outlet piping. If co2 travel to canister will result in air trap in canister.

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David, best give clearer picture. the bros who did that intake mostly below 3BPS, i did same before when i bought a inline diffuser.
low bps harder to get airlock, i moved to 3BPS and very often airlock occur.

For TS, give a thought
what will the hobbyist do if by trying that and end up breaking his/her ehiem canister?

after i had that problem, i did a unconventional move. Buying a prefilter.
Intake -> Canister -> Inline Diffuser -> Prefilter -> Outflow

Result: most of the time (90% of times) i do not see a single bubble, and the prefilter housed some BB and kept my waters damm clear

[mincedmeat]

sorry, but why place it near the intake when you could also place it near the outflow such that the current brings your CO2 out into the tank instead?

[stormhawk]

Felix, the prefilter should be at the intake end not the output end. I find that using a prefilter cuts down on maintenance for my canister. The prefilter usually traps most of the fine stuff and anything that gets into the canister is usually taken care of by the filter BB.

As for the CO2 injection, better to be on the output side. With an inline diffuser like those from UP or other brands, I feel diffusion is better, and no danger of airlock in the canister even with higher BPS.

http://www.up-aqua.com/00-dm-page/00up_co2-118-1.jpg

[felix_fx2]

Storm, thats why I said non convential.
I used the prefilter to trap co2 from leaving to the tank itself. Access to my canister is easier so I unplug and squeeze the filter wool once every month.

Btw: you happen to know how much these new type diffuser prices? Looks not bad.

[stormhawk]

I think $30-50+. I saw at GC but never ask for price. Maybe at C328 also have.

Non-conventional as long work can already. I just throw away the wool and replace with fresh wool once every 2 weeks. The wool get messed up very quickly.

[felix_fx2]

That's the range I bought my 1st inline for. Maybe can buy and test the last model.

Yeah that worked wonderfully well then I expected. Now have same problem of bubbles more then pearling lol.

[sateman]

'


after i had that problem, i did a unconventional move. Buying a prefilter.
Intake -> Canister -> Inline Diffuser -> Prefilter -> Outflow

Result: most of the time (90% of times) i do not see a single bubble, and the prefilter housed some BB and kept my waters damm clear

I was thinking of doing the exact same thing. Instead of using the prefilter as a prefilter, why not use it to house additional bio media for more BB power? I think I will give it a try. And the UP inline diffuser too! I just hope that it will not reduce the filter flowrate.

[felix_fx2]

Confirm will reduce flowrate, how much it affect another question haha.