DIY Co2 or Liquid co2? - The Planted Tank Forum
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post #1 of 3 (permalink) Old 06-15-2014, 06:48 PM Thread Starter
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Hey guys.
I need some form of Co2 in my planted aquarium.
I used to run the DIY yeast sugar, and water on a 2 liter bottle.
I also know that I could use Liquid co2 such as Seachem Flourish excel.
Which is better, more efficient, and more cost effective?

I do have quite bit of surface agitation.
So, would the liquid Co2 be a better; because then the Co2 bubbles may be oitgassed by the incoming oxygen.
I think the liquid Co2 may be a better option now because I think liquid Co2 just gives the plants carbon through a chemical reaction or something without having to disolve co2 bubbles in the water.
What do you guys think?

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Last edited by Darkblade48; 06-16-2014 at 12:51 AM. Reason: Back to back posts
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post #2 of 3 (permalink) Old 06-16-2014, 07:16 AM
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Liquid co2 i feel is more an algaecide, may kill certain plants. though my algae problems are long gone, don't know how much my co2 went up though..
Diy co2 would be sure to give you co2 and depending on your light, if it's high light you may get algae from co2 shifts. I found diy co2 very cheap . I used super glue and airhouse with lees wooden airstone going into my internal filter and spraying bubbles everywhere. Some don't like the spray though i guess. Anyways my 2 cents
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post #3 of 3 (permalink) Old 06-16-2014, 08:21 PM
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If you can reliably and consistenly make enough CO2 with out too much hassle (from what ive read its somewhat easy). Then DIY is the way to go. Excel, while being a general antiseptic/algacide, is used as "liquid CO2" because it is an intermediary of the photosynthetic process. Plants can use the carbon from excel in during that process and not have to rely on CO2. However this process isnt nearly as effective as straight CO2 supplementation and can have adverse effects on some flora and fauna. It works great in my low tech tank with some hardy plants, but use pressurized CO2 for my tanks I really want to promote the best growth
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