airstone - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 8 Old 06-26-2013, 07:43 PM Thread Starter
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im wondering if an airstone has any effect on plant growth at all? ive been running one of those lees brand little plastic filtetr things that you fill with filter floss and an air stone. but im wondering if its hurting the growth in my planted tank. i only have 2 fish that are about 4-5 inches long in my 46 gallon tank.

46g bowfront freshwater
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post #2 of 8 Old 06-26-2013, 09:04 PM
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Well, it won't hurt the plants but with such a small fish load it will serve to off gas any excess CO2 that the plants would prefer. The fish don't need it so unless you like the air effect, you may as well not bubble it. I found that when I added fish the plants perked up a lot, more available ammonia and more CO2 always help plant growth. I go a bit farther and don't even disturb the surface anymore.

Jeff.


Total years fish keeping experience: 7 months, can't start counting in years for a while yet.

The shotgun approach to a planted tank with an LED fixture

Small scale nitrogen cycle with a jar, water and fish food; no substrate, filter etc
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post #3 of 8 Old 06-28-2013, 01:15 PM
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If the bubbling is due to your filter, I wold leave it; I have sponge filters in 3 tanks and the plant growth is steady, and certainly no less so than in my much larger tanks with no "bubblers".

I would just not add bubbling devices aside from what is necessary for the filter. CO2 is driven out faster the more water/air disturbance, so it is best not to increase it unnecessarily.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #4 of 8 Old 06-30-2013, 11:48 AM Thread Starter
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i have a canister filter for the tank. the other bubbler is a plastic filter i use to house a bag of purigen and some filter floss. this is kind of an experiment. i always ran a sponge filter in place of this new floss filter thing. its defintly working as i can see it getting dirty.

i normally run a small bag of purigen in the canister filter. i figured why not try on in the floss filter thing.

46g bowfront freshwater
10g freshwater
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post #5 of 8 Old 06-30-2013, 06:29 PM
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Quote:
Originally Posted by skelator View Post
i have a canister filter for the tank. the other bubbler is a plastic filter i use to house a bag of purigen and some filter floss. this is kind of an experiment. i always ran a sponge filter in place of this new floss filter thing. its defintly working as i can see it getting dirty.

i normally run a small bag of purigen in the canister filter. i figured why not try on in the floss filter thing.
Now you have me confused. I don't know how "planted" this tank is, but with live plants there should be no need for chemical filtration. Purigen is chemical filtration, as is carbon and various other substances. These are actually removing nutrients the plants need. Now, I will be honest in saying that the Purigen may not be removing that much, but it is removing organic nutrients that plants need. Like the airstone, this is un-necessary as it is working against the plants. CO2 is being removed by both these processes, since CO2 mainly occurs from the breakdown of organics.

A canister rated for the tank size is more than adequate filtration for a planted tank, unless the tank is out of balance by being overstocked, incorrectly stocked, or too much food is going in.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #6 of 8 Old 06-30-2013, 08:39 PM
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The short answer is an airstone won't hut anything.
NOTE: the amount of CO2 dissolved in water has no relationship to the amount of oxygen dissolved in water. Water movement will impact CO2 levels though. Just to make the answer even more complicated though, there are some who argue, with valid reasoning, that increasing the amount of water/air circulated through a fish tank might increase both oxygen AND carbon dioxide levels. The amount to CO2 that dissolves in water normally is so much lower than atmospheric CO2 that it might actually help to aerate using an airstone (also - plants use oxygen when the lights go out).

Before I get a bunch of high-tech planted tank folks responding, I'm not talking about those pressurized CO2 tanks, but low-tech tanks and water movement.
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18 species/varieties of fish, 15 species/varieties of plants - The fish are finally ahead of the plants!
*560 gallons (2120 liters) in 5 tanks -> you do the math.
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post #7 of 8 Old 06-30-2013, 09:47 PM Thread Starter
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i prolly have 10 plants in the tank ( 3 are large moss balls)along with some maybe 18 or so small lilly pad lookin things floating on the surface. theres one stalk of bamboo growing out of the top of the tank.

there are 2 fish in the tank their about 4-5 inches a flowerhorn which i inherited and a jack dempsey . i feed once a day at night. some nights i dont even do it if i forget.

i dont use carbon at all i started using purigen to help keep nitrate down as close to near zero levels as i can get.

46g bowfront freshwater
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post #8 of 8 Old 07-01-2013, 07:49 AM
pop
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finally a reasonable approach to water movement and carbon dioxide / oxygen diffusion into water.

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