Co2 Diffusor placement - The Planted Tank Forum
 
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post #1 of 12 (permalink) Old 12-01-2007, 08:21 PM Thread Starter
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Co2 Diffusor placement

I'm using two nano diffusors and DIY Co2 in my 20 gallon.

Question is, what is the best placement for the diffusors:

(I have a HOB filter)

1. Directly by the filter intake

2. Directly by the outlet flow, or near the path

3. In the opposite end of the tank furthest from the filter

4. One in each corner
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post #2 of 12 (permalink) Old 12-02-2007, 07:58 PM
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hi ya Baked!

If it were me, I would use just one and put it at the opposite end of the tank since you have a HOB filter...You might have to crank it a lil more cause the HOB will tend to outgas it a little.

tc
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post #3 of 12 (permalink) Old 12-02-2007, 08:17 PM Thread Starter
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Just one?

They are the small nano diffuser from aquaticmagic.
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post #4 of 12 (permalink) Old 12-02-2007, 10:54 PM
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Quote:
Originally Posted by BakedStuffedHuman View Post
Just one?

They are the small nano diffuser from aquaticmagic.
K put both of em on the opposite end of the tank...

tc
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post #5 of 12 (permalink) Old 01-19-2010, 06:00 AM
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Quote:
Originally Posted by BakedStuffedHuman View Post
I'm using two nano diffusors and DIY Co2 in my 20 gallon.

Question is, what is the best placement for the diffusors:

(I have a HOB filter)

1. Directly by the filter intake

2. Directly by the outlet flow, or near the path

3. In the opposite end of the tank furthest from the filter

4. One in each corner

want to check with you on the diffuser, can the diffuser release bubbles at your first attempt?
my new nano diffuser was not able to release any bubble...i being soaking the diffuser for 2 night and still no result...
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post #6 of 12 (permalink) Old 01-19-2010, 06:41 AM
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Quote:
Originally Posted by dannyfish View Post
want to check with you on the diffuser, can the diffuser release bubbles at your first attempt?
my new nano diffuser was not able to release any bubble...i being soaking the diffuser for 2 night and still no result...
with diy co2 it can be challenging to use ceramic diffusers. Most likely you will have to find another solution.
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post #7 of 12 (permalink) Old 01-19-2010, 07:06 AM
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with diy co2 it can be challenging to use ceramic diffusers. Most likely you will have to find another solution.

but i read some forum said tat some successful in using diy co2....
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post #8 of 12 (permalink) Old 01-19-2010, 07:09 AM
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some not all. The pressures that a DIY co2 creats isnt that much. It wasnt even enough to open my clippard check valve. Find another method
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post #9 of 12 (permalink) Old 01-19-2010, 07:13 AM
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but i read some forum said tat some successful in using diy co2....
I read a forum that said I could put a pacu in a 2.5 gallon bowfront. It can be very difficult to get DIY and ceramic diffusers to work.
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post #10 of 12 (permalink) Old 01-19-2010, 07:32 AM
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but the problem are ..even i use airpump / human power to blow directly into the nano diffuser also no bubble seem to be coming out...
the pressure need is higher??
or is it the ceramic coating havent being season yet?
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post #11 of 12 (permalink) Old 01-19-2010, 02:38 PM
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If you're DIY CO2, try the hagen mini elite mod. It's 10 bucks in store, 7 bucks online. Works quite well!
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post #12 of 12 (permalink) Old 01-19-2010, 02:43 PM
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As for placement... 2 would be better than one. In a down-flow would be optimum. I do not think that near the intake would be good. In an HOB the CO2 would get chopped up by the impeller, but then has to pass through the media to return to the tank. Often HOBs send the water horizontally across the surface, too.
If the outlet from the HOB has some downward action that would be ideal. Otherwise the intake of a power head would be good. Aim the power head across the tank and somewhat downward.

Watch something like fish food swirl around to get a better feel for how the water moves around the tank.
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