Is a 29gal tank still small enough where DIY co2 is still effective? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 07-20-2005, 01:25 PM Thread Starter
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Is a 29gal tank still small enough where DIY co2 is still effective?

Like the title says, is it?

Ive decided to do a Amazonian Blackwater Biotope, so Ill have Swords, vallisnera, etc.

I was planning on buying Pressurized CO2 off the bat but at $250 for an auto kit plus a tank, woah

So Im looking at this http://www.aquariumplants.com/cgi-bin/cart/pr009.html

Its a reactor for a DIY setup complete with intructions and such, plus I would be able to use the same reactor when/if I go pressurized.
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post #2 of 9 (permalink) Old 07-20-2005, 01:39 PM
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You can probably get away with a yeast co2 setup on a 29 gallon. I wouldn't spend $50 on that reactor if I were you. They are not hard to build and you can do it for a lot less than $50. Mine cost under $20.

Here are a few links:
http://www.barrreport.com/gallery/showimage.php?i=1
http://www.csd.net/~cgadd/aqua/diy_reactor.htm
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post #3 of 9 (permalink) Old 07-20-2005, 02:11 PM
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DIY on a 29 is workable. When I had my 29g set up, I ran DIY at about 30-40 ppm. Construct your own reactor...not that expensive and you really just need a small powerhead and a gravel vac tube. Don't get too powerful of a powerhead though...I used a mini-jet 50 (it lets you control the flow - IMO the Rio pumps are too strong). Too much power will blow the gas right out the bottom of the tube. No need for a sponge or bioballs either.

The Barr reactor seems like it would work great. Its just a matter of finding the parts for it. I think Home Depot sells the small chamber he uses.

Re-boot!
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post #4 of 9 (permalink) Old 07-20-2005, 02:46 PM
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Quote:
The Barr reactor seems like it would work great. Its just a matter of finding the parts for it. I think Home Depot sells the small chamber he uses.
I couldn't find the containers at all locally, so I had to order one online. The site is www.Viewtainer.com. They are easy to work with and they are cheap. If you go with one of these, order two so if you screw up and drill into the wrong places or something, you can just use the other. I got two with shipping for under $10.

Quote:
I used a mini-jet 50 (it lets you control the flow - IMO the Rio pumps are too strong).
I found that most of the powerheads were too strong, so i ended up with a small, $10 Hydor Pico Pump (93 gph). Just get one that has an adjustable flow.
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post #5 of 9 (permalink) Old 07-20-2005, 02:53 PM
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Diy is possible for any given size tank, its just the matter about how it will last in the long run. 2x 2 liter bottles on your 29g will be fine, but if you have the money i'd go to pressurized, it'll cost under $150 to get a decent setup.
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post #6 of 9 (permalink) Old 07-20-2005, 03:13 PM
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I've had better luck with my 28 and 30 gallon tanks since I cut back to 1 2 liter bottle instead of 2 bottles. I'm using Hagen ladders for diffusion and 2 bottles can get my co2 high enough to kill fish. My advice is to start with 1 bottle and then see how you do. You can always add another one later. It's interesting to me that my tanks are pearling more now that I've cut back to 1 bottle.
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post #7 of 9 (permalink) Old 07-20-2005, 03:31 PM
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I use DIY Co2 for my 55g with no problems(4 bottles). For your reactor, Do Not use sponge. You will have to constantly clean it and your Co2 levels will fluctuate. Either use nothing or use bio-balls (I use ceramic disks). With the bio-balls in the reactor you can dissolve lot more Co2 entering the reactor.

Here is mine:

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post #8 of 9 (permalink) Old 07-20-2005, 04:46 PM Thread Starter
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Quote:
Originally Posted by Jdinh04
Diy is possible for any given size tank, its just the matter about how it will last in the long run. 2x 2 liter bottles on your 29g will be fine, but if you have the money i'd go to pressurized, it'll cost under $150 to get a decent setup.
I have the money, Im just worried about screwing up. Although Im planning on using an SMS122 to take a little worry out of it.
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post #9 of 9 (permalink) Old 07-21-2005, 12:58 AM
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Since it seems you have a canister filter, have you tried just doing an inline diffusor? My cascade is strong enough that I can just inject straight into the intake tube using a plastic T valve (works great).
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