Homemade CO2 System
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    Lightbulb Homemade CO2 System

    Starting my adventures as a aquatic plant hobbyist, I'm beginning to feel that my plants are in need of a growth boost. So I think about a CO2 system. Is there any way of adding CO2 to the tank without any complicated and expensive CO2 tanks? Any possiblity of using yeast or Alka-Seltzer? It seems to be an economical option. I only have a couple of plants in my 115L tank. Any plans to make such a system? Thanks.
    Last edited by exmt; 02-01-2006 at 04:51 PM.

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    Big stick operator Paul_fox's Avatar
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    If you only have a couple of plants in your tank, I really wouldn't bother. Infact even if your 115l was heavily planted I still wouldn't bother. The best way of boosting plant life for the cheapest prcie and least hassle is to add fertilizer to the water.

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    What kinds of fertilizer? Liquid or Pellet?

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    Either, whatever you find easiest. In my community tank I use JBL liquid fert and a nitrate supplement substrate (also JBL) which lies under my sand, kind of like a compost. The combination works wonders.

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    thx. will try fert first. But still am going to build CO2 reactor from yeast. See this link for the plans.
    http://www.qsl.net/w2wdx/aquaria/diyco2.html

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    Homemade CO2 reactor plans

    here's a picture(plan) of the homemade CO2 reactors! They will be sitting on the floor next to my aquarium. Visit http://www.qsl.net/w2wdx/aquaria/diyco2.html for more info.
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    Yeah i know how they work, i would just recommend against it for a tank that small. It isnt really worth the effort compared to ferts. I had this same disicion to make and chose against C02. My plants are doing great with just the fert.

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    what about lighting? Should I consider more powerful lights? I currently have a Coralife 20W full-spectrum lamp. Would that be enough?

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    Why aren't you laughing? ChrisC's Avatar
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    Ha ha! I thought I was the only one using a Gas seperator on their CO2. :respect:

    Thanks,
    Chris

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    Now you're not alone!

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    Why aren't you laughing? ChrisC's Avatar
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    I would seriously advise against listening to much of that article you linked. I too read that and, after a bit of research, I found it would cost near to £50.

    However, some of that stuff is very good, and he explains the science behind it well. Only 1 2ltr bottle is necessary for a 115ltr, and the diffuser he shows is very expensive. Check out the TFC page for more ideas.

    Thanks,
    Chris

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    To make this work, you don't need the diffuser, and you don't need the reactor, just the 2ltr bottle and air tubing! I modifed the plans to be used without the reactor or expensive hand-made diffuser. I will use an airstone even though the author advised against it.
    Here's a cropped picture of my "modifed" plans. The right of the black line is what I will be using. The left side I just scratched out. See, no diffuser needed!
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    Last edited by exmt; 01-01-2006 at 04:09 PM.

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    Do you think a wine bottle with a cork would also work? I feel that glass would be stronger and not lose its shape from all the CO2 pressure.

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    Why aren't you laughing? ChrisC's Avatar
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    I don't know about the wine bottle, but without a diffuser, you'll be wasting your time with CO2!

    Scratch out the second 2ltr bottle on your diagram, you won't need it in that sized tank.

    A very simple way to diffuse the gas is to merely feed the air tubing into the intake of a filter, where the media and powerhead should diffuse most if not all the CO2.

    Thanks,
    Chris

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