Moving those bubbles
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Moving those bubbles

This is a discussion on Moving those bubbles within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; --> Hi All, Co2 bubbles and how to get the across the tank. I have two diffusers at the moment in my tank, one at ...

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Old 09-07-2011, 06:48 AM   #1
 
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Moving those bubbles

Hi All,

Co2 bubbles and how to get the across the tank.

I have two diffusers at the moment in my tank, one at each end, they are little glass ones. The bubbles just go straight to the top though. I dont want to put a powerhead in there as I read that plants dont like too much movement?

Also I have an ehiem 2215 and if I face the spray bar into the tank and put the diffuser under it (its on one end at the moment) there is too much agitation at the top. If I face it down a bit it batters all hell out of the plants you see on the left of my tank. Cant put it at the middle or bottom as there is not enough tubing on those things.

I am at a loss how to keep the bubbles in my tank longer because it just doesnt look like they are dissolving at the moment.


Using DIY co2 by the way

Cheer All

Jimi
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Old 09-07-2011, 10:55 AM   #2
 
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Originally Posted by JImi View Post
Hi All,

Co2 bubbles and how to get the across the tank.

I have two diffusers at the moment in my tank, one at each end, they are little glass ones. The bubbles just go straight to the top though. I dont want to put a powerhead in there as I read that plants dont like too much movement?

Also I have an ehiem 2215 and if I face the spray bar into the tank and put the diffuser under it (its on one end at the moment) there is too much agitation at the top. If I face it down a bit it batters all hell out of the plants you see on the left of my tank. Cant put it at the middle or bottom as there is not enough tubing on those things.

I am at a loss how to keep the bubbles in my tank longer because it just doesnt look like they are dissolving at the moment.


Using DIY co2 by the way

Cheer All

Jimi
Before I decided to go the low tech route on my tank I did some research on DIY CO2 for a high tech tank. Ive read several times that people without pressurized co2 used the Hagen CO2 ladder. It seemed to work well with DIY co2 bottles. It keeps the co2 bubbles in the water column longer.

Here is a video with it in action:

Ive never tried it myself so I dont have any personal experience with it. But it seemed like a good way to apply CO2 to the tank. I think it works because the bubbles at the bottom are bigger but by the time they get to the top they are smaller. I think this is because of the absorption into the tank.

Last edited by kmiceray; 09-07-2011 at 10:57 AM..
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Old 09-07-2011, 11:24 AM   #3
 
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Thanks for that, though I looked into them and people are not very impressed with them.

The general concensus seems to be making an inline reactor so the co2 is mixed up before the spray bar jettisons it into the tank.

I will have a look into that, thanks for your help :O)

Jimi
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Old 09-07-2011, 01:33 PM   #4
 
The bubbles are suppose to float up to the surface. Sure diffusion is not 100%, its difficult to achieve that. Just pay attention to the size of the bubbles as they go up, generally you will notice them getting smaller. Diffuser should be close to the bottom of the tank. I also agree with you about the ladders, they are big, ugly, and work poorly.
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Old 09-07-2011, 01:40 PM   #5
 
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lol. I'm not familiar with CO2 but thought I'd say I thought that the bubbles in the ladder were metal balls! It didn't look right lol
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Old 09-07-2011, 02:23 PM   #6
 
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You can try placing your filter over the diffuser to pull in the CO2 and mix it with the water. Doesn't replace diffusion, but might help with it.
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Old 09-07-2011, 04:04 PM   #7
 
This will probably work with your spray bar

Looks like he put a flow of water at the top from the spray bar then the bottom tube cut in is for the CO2 to enter. Looks like the co2 then gets trapped until it is dissolved. I would probably give this a try.


Last edited by kmiceray; 09-07-2011 at 04:06 PM..
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Old 09-08-2011, 01:50 AM   #8
 
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Yeah that looks good, the only thing I cant work out though is how the co2 rich water gets back into the tank? Is there an opening at the end of the tube?

Im not the best at physics lol
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Old 09-08-2011, 10:31 AM   #9
 
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Yeah that looks good, the only thing I cant work out though is how the co2 rich water gets back into the tank? Is there an opening at the end of the tube?

Im not the best at physics lol
The opening is at the bottom of the tube. The bottom is missing. If you look at the water flow line it is pointed down into the tube. But the current probably will not be to strong since it is coming off one hole from the spray bar. This should allow for the co2 to stay in the tub with the water but eventually the co2 enriched water slowly flows out of the tub and back into the tank.

Ive never done this before but it seems logical to me.
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Old 09-08-2011, 10:44 AM   #10
 
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Ah that seems cool, I think I will try this, ty Kmiceray :O)

Jimi
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