DIY co2 - The Planted Tank Forum
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post #1 of 19 (permalink) Old 05-07-2014, 11:01 PM Thread Starter
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DIY co2

Is is the best way to diffuse my co2? I have a DIY co2 system and it's working ok I haven't seen any results as I just put it in yesterday. Come use some thoughts on it.
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post #2 of 19 (permalink) Old 05-07-2014, 11:03 PM Thread Starter
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Here's another picture
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post #3 of 19 (permalink) Old 05-07-2014, 11:42 PM
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Those bubbles are too big. Buy one of of these: http://www.amazon.com/gp/product/B0009YD7D4/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER.

Follow these directions: https://www.youtube.com/watch?v=2U8G...8&noredirect=1.
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post #4 of 19 (permalink) Old 05-08-2014, 12:26 AM
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While not the best way, it is definitely one method of getting CO2 to dissolve into your water column.

As mentioned, the bubbles that come out of a regular airstone may be quite large, meaning that there is less surface area. This results in a slower dissolution process, wasting more CO2 (any CO2 that reaches the surface is wasted).

You can try having the airstone near a filter intake so that the bubbles become chopped up by the impeller or alternatively, have some kind of powerhead to push the bubbles downwards so that they have more time to dissolve (alternatively, you may want to angle your filter return to blow the bubbles downwards).

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post #5 of 19 (permalink) Old 05-08-2014, 05:41 PM Thread Starter
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The outlet is a marineland eclipse hood. And the water current pushes them out. Not a lot of bubbles come out of the air stone some. I'm thinking about making a DIY co2 system with a paintball cylinder and using this eheim diffusor.
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post #6 of 19 (permalink) Old 05-10-2014, 10:44 PM
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One very simple way to increase your amount of co2 dissolved into your water is to lower your airstone to the bottom of your tank. The longer the bubbles move trough the water the more co2 that is dissolved.

Currently I'm using a cheap eBay diffuser on my DIY yeast co2 system. It produces really fine bubbles. However, the downside is that is tends to clough up in about two months. A propped bleach cleaning every now and then will help to avoid this.
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post #7 of 19 (permalink) Old 05-11-2014, 12:27 AM
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You can use the tip of a chop stick at the end of the tubing or stuff a cigarette filter instead of the air stone for a temp fix.
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post #8 of 19 (permalink) Old 05-11-2014, 02:30 AM
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i used to use a baby medication syringe with cotton stuffed inside. the tip is the right size for an airline. it made very fine bubbles but the cotton would have to be replaced every 2 months or so.
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post #9 of 19 (permalink) Old 05-11-2014, 02:45 AM
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On a 20H that Im really just experimenting with, I have the raw tube running inside the intake of an Aquaclear 30. The filter media goes bottom to top, sponge, sponge, bio. So it's basically going through the same process as this rig, with more sponge area and a faster propeller doing the chopping.
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Originally Posted by rcs0926 View Post
Those bubbles are too big. Buy one of of these: Amazon.com : Hagen Elite Underwater Mini Filter, UL Listed : Aquarium Filters : Pet Supplies.

Follow these directions: https://www.youtube.com/watch?v=2U8G...8&noredirect=1.
There is only a very fine mist of bubbles coming out of the filter that get blown all over the tank. Im sure there are better ways but it seems to be pretty efficient. All the bubbles you see here are from the plants pearling upward



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post #10 of 19 (permalink) Old 05-12-2014, 12:39 AM Thread Starter
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I ended up buying the hagen elite mini filter
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post #11 of 19 (permalink) Old 05-12-2014, 12:54 AM
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Nice
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post #12 of 19 (permalink) Old 05-12-2014, 01:03 AM Thread Starter
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My plants are looking great already except my little ludwigia repen
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post #13 of 19 (permalink) Old 05-12-2014, 01:04 AM
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Give it some time, they'll come around.
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post #14 of 19 (permalink) Old 05-12-2014, 01:12 AM
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Here's how I do it. Everyone has their personal preference but this works for me. The power head is rather cheesy and jet streamy. If you do it this way I recommend a better power head, I went for cheap.
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post #15 of 19 (permalink) Old 05-12-2014, 02:38 AM
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How noisy are these methods that use the filter/pump to diffuse the CO2?
I get an air bubble through my filter every now and then and it is kind of loud. I'd imagine having the CO2 dumped directly into the intake would be quite irritating.

I usually feel kind of guilty using the quick reply... my replies are rarely quick.
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