How do you cycle a monster fish tank?

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ichthyogeek

Plecostomus
MFK Member
Jan 1, 2015
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Arkansas
I get that 10 ppm for fishless cycling of tiny fish would be okay, even maybe overkill for some of the smaller fish. But Arowana, stingrays and the like I'm assuming will produce more, I'm conservatively guessing 25 ppm ammonia per day. Do you just increase the amount of ammonia added during fishless cycling? For the oddest reason, I'm getting this image of somebody going to Ace Hardware, or someplace, grabbing ten containers of ammonia, and just dumping the contents of one in a large tank every other day or so...
 
I can't follow the math.

5,000 drops per day is enough to handle a 10,000 gallon tank. One 2-quart container of ammonia (about 40,000 drops) will supply that much for 8 days. Thus, even a person with a 10,000 gallon tank would not need "ten containers" of ammonia.


And you're not going to be adding 25 ppm of ammonia per day when you have fish. That's the equivalent of 91 ppm nitrates on a daily basis. You'd need 100% water changes every 6 hours to maintain nitrates at 23 ppm.
 
Sorry about that. I'm used to tiny fish, and still have no idea about how much ammonia is produced per day per fish.

When I said 10 containers, I honestly thought that large fish do create quite a large amount of ammonia, so 10 seemed like a nice round number to use, as well as large enough to accomodate the fish.
 
For the oddest reason, I'm getting this image of somebody going to Ace Hardware, or someplace, grabbing ten containers of ammonia, and just dumping the contents of one in a large tank every other day or so...

And then get questioned by the FBI lol.
 
Cleaning ammonia is very concentrated compared to the ammonia fish produce.
1 ppm is like 1 m&m in a million. 1 drop of concentrated ammonia is much higher than that.
Since your preparing for an arowana, I assume you have a large tank.
So for example, fill your 200gal+ tank, and pour in half cup of ammonia, and test the next day, my guess is your ammonia test will read quite high.
 
Nope, just curious as usual. The largest tank I have is a 55 gallon...I was just wondering how in the world one can cycle such a large tank, kind of like with public aquaria.
 
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