Earth Pellets and "RIGHT NOW" bacteria for co2 - The Planted Tank Forum
 
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post #1 of 15 (permalink) Old 07-21-2010, 04:55 PM Thread Starter
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Earth Pellets and "RIGHT NOW" bacteria for co2

Has anyone ever used Earth Pellets and Right Now bacteria?

I read about it here http://www.smartaquarist.com/?p=1074

It seems like the pellets have a massive amount of surface area, and the right now bacteria produce a lot of co2, so with the increased SA, the bacteria produce sufficient co2 for a low light-ish planted tank.

If these work out, it looks like it'd be much more convenient then mixing up a yeast mixture every few weeks and a lot less expensive then going pressurized.
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post #2 of 15 (permalink) Old 07-21-2010, 05:12 PM
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the bacteria now stuff you are talking about is the same stuff that you grow in your tank. and the earth pellets do the same thing as any of the other filter media that everyone else makes. none of these are new, just a different marketing scheme.
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post #3 of 15 (permalink) Old 07-21-2010, 05:48 PM
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They are trying to sell the fact that aerobic bacteria produce CO2 as part of their normal respiration as a source of CO2 for plants? How suspicious.

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post #4 of 15 (permalink) Old 07-22-2010, 12:15 AM
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We discussed this in the local group, had a good laugh.

The entire natural CO2 issue is determined by the availability of O2, which is 5-8ppm and rather insoluble. This means if all the O2 was consumed and added back as CO2, there'd be no O2(= dead fish at 2-3ppm or so) and we'd only get a maximal supply around 5-8ppm of CO2.

Realistically where fish are present and good strong aeration, filtration is occuring etc......we might get 2ppm added, not bad if it's a non CO2 tank, but ain't no way it's 20ppm, someone is hitting the pipe on that estimate.

What goes in as O2 and is respired must come as CO2.

So the rate limitation is O2.


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post #5 of 15 (permalink) Old 07-22-2010, 05:18 AM
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If I remember correctly, they claim the Earth Pellets make the bacteria able to consume nitrates to produce CO2, and perhaps the oxygen comes from the NO3 instead.

Regardless, I would not want bacteria in my tank that reproduces as fast as they claim consuming either my oxygen or nitrates.

The whole thing sounds dubious. I doubt you'll find anyone here who has actually tried this stuff. When I last looked, I was only able to find a single person anywhere on the Web that reported significant CO2 production; obviously excluding the manufacturer.
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post #6 of 15 (permalink) Old 07-22-2010, 06:10 AM
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Quote:
Originally Posted by DarkCobra View Post
If I remember correctly, they claim the Earth Pellets make the bacteria able to consume nitrates to produce CO2, and perhaps the oxygen comes from the NO3 instead.
No, that's not possible except under extremely anaerobic conditions which never exist in aquariums.

Wishful ignorant thinking I suppose.


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The whole thing sounds dubious. I doubt you'll find anyone here who has actually tried this stuff. When I last looked, I was only able to find a single person anywhere on the Web that reported significant CO2 production; obviously excluding the manufacturer.
20ppm of CO2?
hahahaa

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post #7 of 15 (permalink) Old 07-22-2010, 08:22 AM
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Quote:
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No, that's not possible except under extremely anaerobic conditions which never exist in aquariums.

Wishful ignorant thinking I suppose.
I think they're wishing we're ignorant enough to buy it.
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post #8 of 15 (permalink) Old 07-22-2010, 09:10 AM
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Next thing you know, they will be selling co2 tablets that supposedly add co2 to tanks....

Oh wait they do, and there are suckers who buy them. lol


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post #9 of 15 (permalink) Old 07-22-2010, 09:19 AM
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Wait, you mean that giant 20lb box of co2 pellets I bought are useless???




ROFL....
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post #10 of 15 (permalink) Old 07-22-2010, 03:18 PM
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The Diana Walstad el natural tank method relies on naturally produced CO2 from organic decomposition of matter in the substrate. But, of course, that method also requires that the light be limited to low intensity, so the plants growth rate will not be high enough to require more than minimal CO2. Reading the "review" of this product seems like it is just a misapplication of the Walstad method, and putting the pellets, which look like ordinary hydroton pellets, in the filter doesn't seem reasonable. Also, that "review" raves about how stable the nitrogen cycle is with the pellets - all nitrogen cycles, meaning the colonies of beneficial bacteria on all wet surfaces, are pretty stable. You can do as big a water change as you want, since the bacteria live on surfaces, not in the water.

Even the description of the enormous surface area of the pellets should be taken in context - all baked clay products have that huge surface area, which helps them to have a high CEC. Those pellets are almost certainly a generic hydroton-like product, which is very inexpensive.

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post #11 of 15 (permalink) Old 07-22-2010, 06:35 PM Thread Starter
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I also read about it on tankspiration, http://www.tankspiration.com/2010/05...ted-aquariums/

the article was written by some guy on aquariumslife.com.

not saying these are great sources but they say they tried it and it works. Although it does sound pretty sketchy as far as the science goes.

edit: oh, just saw that he also sells earth pellets on aquariumslife.com

well then, guess that answers that
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post #12 of 15 (permalink) Old 07-22-2010, 07:45 PM
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i bet if anything it alters the ph or kh chemically. and then he checked his "stable co2 levels" by using the co2 - ph/kh chart.
in the article he wrote that his ph dropped a full point.
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post #13 of 15 (permalink) Old 07-22-2010, 11:16 PM
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Unless the pH drops due to CO2 and not other additions, then it's not adding what plants really need :CO2.

Did they add CO2 to see?
In otherwords, did they confirm?
Somehow I do not think that was the case, just guessing the range of CO2 based on pH.


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post #14 of 15 (permalink) Old 07-23-2010, 01:57 AM
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exactly
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post #15 of 15 (permalink) Old 07-23-2010, 04:18 PM
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Quote:
Originally Posted by plantbrain View Post
Unless the pH drops due to CO2 and not other additions, then it's not adding what plants really need :CO2.

Did they add CO2 to see?
In otherwords, did they confirm?
Somehow I do not think that was the case, just guessing the range of CO2 based on pH.


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Tom Barr
Careful, most folks who know this also do not confirm their own CO2 measurements.

Few do in fact.

CO2 is by far the hardest parameter to measure for aquarist.


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