will someone explain...

Sep 27, 2009
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#1
well i have a well established tank with all sick free fish. perfect water conditions if the test kit is right..... but all i want to know is what cycle means i hear people talk about on threads all the time but i have not the slitest idea what it means to cycle a tank....*twirlysmi:rolleyes:*SUNSMILE**PEACE!*
 

Newman

Elite Fish
Sep 22, 2009
4,668
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Northern NJ
#2
The forums and other sources are most likely referring to the Nitrogen cycle.

Beginner FAQ: The Nitrogen Cycle

Basically happens all the time outside of an auqarium, but is very imporant in a closed-off environment such as a fish tank.

The cycle in fishtank terms, really means the builtup of certain bacteria that do the famous converions. One type converts ammonia to nitrites. another type converts nitrites to nitrates. the nitrates are basically used by plants, including algae.
 

MOA

Medium Fish
Aug 20, 2009
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#3
Hello,

Cycling is the process of getting the tank ready for fish buy cultivating the right kinds of bacteria. here are some links that may be of interest:

Basic Intro to Cycling: Tutorials and Videos (MOA's: How Many Fish?, Stocking Freshwater Aquariums)

Biological Processes in the Aquarium: The Biological Nitrogenous Cycle: A Must for Freshwater Aquarists (MOA's: How Many Fish?, Stocking Freshwater Aquariums)

Manipulating the Cycle (Personalized Spreadsheet): Extra Downloads (MOA's: How Many Fish?, Stocking Freshwater Aquariums)


Of course, I would suggest that you read more than the material in those links--they are just a place to start.

MOA
 

blamejames

Medium Fish
Oct 19, 2009
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#6
definitely important to cycle a tank! unless you have really hardy fish like goldfish then chances of survival are slim! you need the bacteria inorder to break down ammonia into nitrates then nitrites!
 

Feb 27, 2009
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#7
definitely important to cycle a tank! unless you have really hardy fish like goldfish then chances of survival are slim! you need the bacteria inorder to break down ammonia into nitrates then nitrites!
Actually, its ammonia, then nitrites, then nitrates.

You can cycle a tank with fish safely if you use the right dechlorinator, one that also makes ammonia and nitrites non-toxic to your fish.

The chances are not 'slim' if done right.
 

MOA

Medium Fish
Aug 20, 2009
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#9
OrangeCones,

The right "dechlorinator" will not help you cycle a tank with fish in that most chemical additives that detoxify ammonia actually bind it--making it unavailable to anything in the tank, including the bacteria. Using chemicals actually bypasses the cycling process in that the tank will not cycle unless raw ammonia is allowed to exist in the tank. This is actaully a big problem in that if you ever forget to add the "dechlorinator" (a true dechlorinator just removes chlorine or chloramine), then the ammonia levels will spike because of not being bound anymore. The result is sudden fish deaths.

Now there are a couple of additives out there that use a binding agent that does not keep the bacteria from getting to the ammonia, but these sort require extra time for the cycle to complete as the levels in the tank are never allowed to get very high. Additionally, most of the chemical additives also add a bunch of stuff that are not really needed. I used to sell fish and can tell you that most people don't need anything more in the way of additives than a simple dechlorinator (not special stuff) and some medication just in case the aquarist introduces a sick fish. Otherwise, most products are out there for one reason: so that you will buy them.

There are alternatives to using chemicals that are much safer and quicker, like using live bacteria or a silent cycle (they are also cheaper in the long run).


MOA
 

Feb 27, 2009
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#11
OrangeCones,

The right "dechlorinator" will not help you cycle a tank with fish in that most chemical additives that detoxify ammonia actually bind it--making it unavailable to anything in the tank, including the bacteria.

MOA
I beg to differ, MOA. If the ammonia is bound, it is non-toxic to fish but still available to be used by the bactera that makes up the 'nitrogen cycle'.

This is actaully a big problem in that if you ever forget to add the "dechlorinator" (a true dechlorinator just removes chlorine or chloramine), then the ammonia levels will spike because of not being bound anymore. The result is sudden fish deaths.MOA
Bound ammonia does not becomes 'unbound' after a time limit, and will not cause a 'spike' in ammonia later.

A 'true dechloriniator' that just removes the chlorine or chloramine as you say, is using reduction to change the Cl2 to Cl- ions in the case of chlorine. The Cl- ions will evaporate into the air.

When the chlorine is removed from the chloramine molecule (NH2Cl), you are left with just Nitrogen and Hydrogen. This is unstable, and in the presense of water, will combine with Hydrogen, creating NH3 or ammonia.

So a 'true dechloriniator' as you called it, will change chlorimine to Chlorine ions (which will evaporate into the air), and ammonia. If the ammonia is not bound, then it is toxic to fish.
 

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MOA

Medium Fish
Aug 20, 2009
94
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#12
OrangeCones,

"I beg to differ, MOA. If the ammonia is bound, it is non-toxic to fish but still available to be used by the bactera that makes up the 'nitrogen cycle'."

Not if it is bound--binding stabalizes the molecule and makes it harder for the bacteria to break it apart. The bacteria do best if the ammonia is left as an anion.


"Bound ammonia does not becomes 'unbound' after a time limit, and will not cause a 'spike' in ammonia later."

I was not saying that the ammonia would suddenly unbind. What I was saying is that the fish naturally produce ammonia that would require more additive to bind. If the additive is not added, then the ammonia levels will rise because the fish are constantly producing waste.


"A 'true dechloriniator' that just removes the chlorine or chloramine as you say, is using reduction to change the Cl2 to Cl- ions in the case of chlorine. The Cl- ions will evaporate into the air."

Yes, thus the chlorine/chloramine is removed.



"When the chlorine is removed from the chloramine molecule (NH2Cl), you are left with just Nitrogen and Hydrogen. This is unstable, and in the presense of water, will combine with Hydrogen, creating NH3 or ammonia."

Yes, meaning that chloramine removal, in itself, contributes to the problem.


"So a 'true dechloriniator' as you called it, will change chlorimine to Chlorine ions (which will evaporate into the air), and ammonia. If the ammonia is not bound, then it is toxic to fish."

No, the ammonia will be in an environment that is properly cycled if I were to have my way: the bacteria would quickly break the ammonia down. Ammonia is constantly being produced by the aquarium inhabitants--the little bit that comes from dechlorinating the water used for water changes is pretty inconsequential by comparrison.

The problem with using chemicals is that the tank is constantly producing ammonia. Thus, if you only use an additive at particular times, then your are only solving the problem for that moment (also, testing once such an additive is added is invalid since the solution is only temporary; if the tank is uncycled, the ammonia/nitrite will begin to rise after a few days). In the mean time, the fish will generate more waste and the ammonia can exceed the stoichiometric capacities of the additive. The net result is possible (not necessarily definite) system failure.

I see no reason to rely on chemicals when natural methods are safer and more effective. What's more, using an additional bacteria source or a silent cycle is cheap! Why spend extra money? I am not saying that using additives can't work:

"Now there are a couple of additives out there that use a binding agent that does not keep the bacteria from getting to the ammonia"

However, I am saying that isn't necessarily needed or best--nature works pretty well on its own. I have been keeping fish for a decade, have bought and sold them, bred them, and have kept all sorts. Never have I seen one of my tanks fair better with additives. I have tried additives before, but all they did was cause my values to swing or "ride" high. Yes, there were exceptions--a couple tanks did okay. No less, all my tanks that I cycled using bacteria or a silent cycle worked beautifully. What's more is that they were cheap to maintain.

If you love your additives and are convinced that they work, then fine, but I am going to stick to my inexpensive tanks that don't require any special manipulations. Water in, water out--that's all I do with my tanks once they are up and running, no reason to worry about more (unless breeding or in the case of some special species).

I respect your opinion, I really do. Additives can and do work if done properly. I agree with you on that point. Where we differ is that I see no use in spending extra money or fiddling with extra stuff. I've sold a lot of fish merchandise and people like you kept me in business (so thank you for paying my salary), but the fact is that I myself didn't use most of what I sold to people like you because I knew that there were easier, more cost effective methods.

MOA
 

Feb 27, 2009
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#14
Not if it is bound--binding stabalizes the molecule and makes it harder for the bacteria to break it apart. The bacteria do best if the ammonia is left as an anion.MOA
The bound ammonia does not inhibit the bacteria from cycling a tank in the slightest.

Yes, thus the chlorine/chloramine is removed.
MOA
The chlorine is the only thing removed. The rest of the chlorimine molecule is free to make ammonia if not bound to make it non-toxic to fish.

If you love your additives and are convinced that they work, then fine, but I am going to stick to my inexpensive tanks that don't require any special manipulations. Water in, water out--that's all I do with my tanks once they are up and running, no reason to worry about more (unless breeding or in the case of some special species).

I respect your opinion, I really do. Additives can and do work if done properly. I agree with you on that point. Where we differ is that I see no use in spending extra money or fiddling with extra stuff. I've sold a lot of fish merchandise and people like you kept me in business (so thank you for paying my salary), but the fact is that I myself didn't use most of what I sold to people like you because I knew that there were easier, more cost effective methods.MOA
MOA - I'm so curious now. What do you mean by 'people like you' anyway?

I do not use 'additives' except a good dechlorinator while doing water changes. It happens to bind ammonia also. At 2 drops per gallon, its not expensive.

You say you do 'water in, water out'...Does that mean you do not use a dechlorinator at all? If you do, which one?

I live in a city that uses chlorine and chloramine so I must use a dechlorinator if I do water changes on my tanks. I don't even NEED to bind ammonia due to the fact that I grow plants. They love straight ammonia, so no need to 'cycle' a tank at all if you grow plants right.
 

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Newman

Elite Fish
Sep 22, 2009
4,668
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Northern NJ
#16
and i know what sarcasm is.
I was sarcastic when i was talking about sarcasm lol. not sure if you followed that, but i was just kidding, i know that youre aware what sarcasm is ._.

People wanting o kill their fish and start over or give up on fish? its common sense that no normal person on here would be that cruel. I as far as i can see all people here are notmral and love fish/ aquatic plants.
 

MOA

Medium Fish
Aug 20, 2009
94
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#17
OrangeCones,

"People like you"--People who buy more expensive products that are supposed to do more things even though cheaper alternatives are available. The aquarium industry makes a killing off of peoplelike you--even little things like buying the dechlorinator at also binds ammonia. A small change in production, huge margin in profit :).

Also, I hardly ever use a dechlorinator unless my resevoir is empty. otherwise, I use water that has gased off and decomp'ed in the resevoir tank. High startup cost, but very easy to use once it is running (anworks well if you have many tanks, but best to put the resevoir in the second story lol).

As to the other stuff regarding the plants and different cycling methods, I already said I agree with you. I just don't care to add anything that isn't really needed. "People like you" go to extra trouble sometimes that a little patience easily remedies. The truth is that we probably feel pretty much the same about cycling in that I have never done a conventional fishless cycle on any of my tanks--preferring other methods that act a little faster (but no chemicals). We are probably more similar than different, but I get hung up on details when people start giving the pet industry more revenue than the hobby merits. I am always scared that a new aquarist will see a post about chemical additives and decide to go down to the pet shop and buy every product on the shelf. Such a situation could seriously upset the water chemistry and ruin a perfectly good aquarium. I like to keep he chemical side of aquarium husbandry simple (got sick of chemistry in college, lol). Other than that one detail, I think we are effectually saying the same thing.

So, what do you think? Are we baically on thesame page or am I loco?

MOA
 

Feb 27, 2009
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#18
We are probably more similar than different, but I get hung up on details when people start giving the pet industry more revenue than the hobby merits. I am always scared that a new aquarist will see a post about chemical additives and decide to go down to the pet shop and buy every product on the shelf. Such a situation could seriously upset the water chemistry and ruin a perfectly good aquarium.MOA
Other than a dechlorinator, I've never advocated to anyone to use any additives, chemicals, medications, etc.

"People like you."

I'm done with this flame.

MODS, if possible, please remove all of my posts.
 

bmoraski

Large Fish
Mar 9, 2009
604
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Upstate NY
#19
I was sarcastic when i was talking about sarcasm lol. not sure if you followed that, but i was just kidding, i know that youre aware what sarcasm is ._.

People wanting o kill their fish and start over or give up on fish? its common sense that no normal person on here would be that cruel. I as far as i can see all people here are notmral and love fish/ aquatic plants.
Don't mind me dude. I'm having a really bad couple of weeks.between work and home,I'm going freaking nuts ! Lol