Increased growth (higher CO2) = shorter plant life? - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 09-15-2014, 04:41 AM Thread Starter
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Increased growth (higher CO2) = shorter plant life?

Hi all,

I'm wondering if boosting plant growth through higher levels of CO2 will shorten the lifespan of our plants.

I know that the longest-living plants are extremely slow growers, and although I don't know the mechanism it makes sense that boosting their growth rate would "use up" more of their...er....life-force....er...sorry...in a shorter period.

Any thoughts?
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post #2 of 8 (permalink) Old 09-15-2014, 06:57 AM
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I've had plants in a co2 injected tank for about two years now and they're still growing so I personally think it doesn't matter the co2 just creates ideal conditions for the plants to thrive where as low tech tanks are more harsh environments which reduces their growth rates


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post #3 of 8 (permalink) Old 09-15-2014, 07:31 AM
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Smile "Life-Force" is an Inexhaustible Supply Around Us

Plants are annuals or perennials, they propagate by whatever there means are; providing fertilizer, carbon bring the primary component, and CO2 becomes the top the top “fert.”

Carbon dioxide is really no different than any other fertilizer, the plant can only be limited by it, the plant will never overuse it, any more than a plant would over-use Nitrates or Boron.

Joe
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post #4 of 8 (permalink) Old 09-15-2014, 08:54 AM Thread Starter
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Quote:
Originally Posted by JoeRoun View Post
Plants are annuals or perennials, they propagate by whatever there means are; providing fertilizer, carbon bring the primary component, and CO2 becomes the top the top “fert.”

Carbon dioxide is really no different than any other fertilizer, the plant can only be limited by it, the plant will never overuse it, any more than a plant would over-use Nitrates or Boron.

Joe
Yeah, but that doesn't mean that partially depriving the plant of some set of nutrients/fertilizer won't help it live longer.

Yeasts, mice, and monkeys (humans maybe) live significantly longer in half-starvation mode.

I'm just curious, mind you. I give my plants plenty of ferts, CO2, and light. I don't care if that makes them burn out faster, as long as they look pretty before they do.
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post #5 of 8 (permalink) Old 09-15-2014, 10:26 PM
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Stem plants live forever! We cut off the bottoms, and replant the tops, or we give away the tops to be used in other aquariums, so that our plant soon exists in tanks all over the world, never dieing! (That is only a slight exaggeration.)

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post #6 of 8 (permalink) Old 09-16-2014, 12:48 AM
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Quote:
Originally Posted by Hoppy View Post
Stem plants live forever! We cut off the bottoms, and replant the tops, or we give away the tops to be used in other aquariums, so that our plant soon exists in tanks all over the world, never dieing! (That is only a slight exaggeration.)
True. I agree 100%

Aquatic stem plants are immortal, they do not have annual seasons/perennial etc like land plants.
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post #7 of 8 (permalink) Old 09-16-2014, 01:11 AM
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I have never had a plant die of old age, in fact it is debatable whether plants even can die of old age (and the discussion is generally centered on defining what exactly constitutes dying of old age).


I suspect the closest you will ever get in an aquarium is having a plant grow too large.


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post #8 of 8 (permalink) Old 09-16-2014, 07:56 AM
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Smile Obviously a Plantest Bigot… Plants Rule!

I actually think you are betraying your mammal-centric belief system.

Members of kingdom Plantae generally do not have the same sorts of energy storage cells as members of other kingdoms. There are plants that grow for centuries, even millennia, some plants are biologically immortal. That does not even count the plants that clone themselves.

Plants simply function in a different biological system. Plants also tend to regulate themselves based on nutritional and photonic availability.

Some plants grow until they flower and/or fruit. I kept a couple of Sweet Basil (Ocimum basilicum) plants growing on the north side of my house for over 2-years, by removing the buds before they could flower, the one time I did not catch them the plants flowered, then withered within days.

Generally plants will not abuse an unlimited supply of nutrients the way my dog and I will.

Joe



Quote:
Originally Posted by zachawry View Post
Yeah, but that doesn't mean that partially depriving the plant of some set of nutrients/fertilizer won't help it live longer.

Yeasts, mice, and monkeys (humans maybe) live significantly longer in half-starvation mode.

I'm just curious, mind you. I give my plants plenty of ferts, CO2, and light. I don't care if that makes them burn out faster, as long as they look pretty before they do.
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