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Old 10-01-2006, 11:38 AM   #1
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Science project

My soon-to-be stepdaughter hase to do a project. I am planning on the cycle of a new SW tank ("freshies", you are more than welcome to have some input). We will have pics and everything. I need a good hypotheses. For you that don't remember (like me), here are the steps:
Steps of the scientific method
1. Name the problem or question
2. Form an educated guess (hypothesis)
of the cause of the problem and make
predictions based upon the hypothesis
3. Test your hypothesis by doing an experiment or study (with proper controls)
4. Check and interpret your results
5. Report your results to the scientific
community
Any and all suggestion would be great! Plus, we will have pics and might be able to add it to a sticky, for future folks.

PS. We are doing a fishless cycle, and don't want to subject any live animals to "heck", if you knoe what I mean...
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Old 10-01-2006, 03:48 PM   #2
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you could set up 2 tanks with pretty much the same stuff in them. you could try to set up 2 tanks with 2 different temps, maybe 70 and 80? and see which one cycles first? thats easy enough
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Old 10-01-2006, 03:56 PM   #3
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Quote:
Originally Posted by krap101
you could set up 2 tanks with pretty much the same stuff in them. you could try to set up 2 tanks with 2 different temps, maybe 70 and 80? and see which one cycles first? thats easy enough
Good idea.

The question could be something like:

How does the water temperature in a saltwater aquarium affect the rate in which bacteria grows?

And you could have three tanks to test it with. One would be the constant (80 degree water), another would be at 65 degrees, and another at 95 degrees.

The only problem with this is that you would have to buy a chiller, unless you want to keep the room at 65 degrees.
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Old 10-01-2006, 04:14 PM   #4
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What grade is your stepdaughter in, roka64? Does she have the 4 - 6 weeks that will be neccessary for a cycle to occur?

I think it would be neat to test the cycling efficiency of the various products out there, as opposed to plain old ammonia. Instead of tanks, I don't see why you couldn't use well rinsed 1 gallon milk containers.

Something like this comes to mind:
Tank 1: ammonia
Tank 2: ammonia + gravel or filter material from established tank
Tank 3: ammonia + Marineland BioSpira
Tank 4: ammonia + Hagen Cycle
etc
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Old 10-01-2006, 04:35 PM   #5
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Science project

[quote"QTOFFER"]What grade is your stepdaughter in, roka64? Does she have the 4 - 6 weeks that will be neccessary for a cycle to occur?[/quote]

She is 14 and in all honor classes. Yes, it is due in December.

The project is for a science fair, so you know, the BIG cardboard with explanations and picture.

Thanks for the advice and keep it coming!
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Old 10-01-2006, 05:14 PM   #6
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Since the problem has been identified, I'll just go with the graphics you should display. A nice illustration of the nitrogen cycle will do wonders IMO.

PS - Yeah, I did that.
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Old 10-01-2006, 09:04 PM   #7
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Science project

Quote:
Jchillin
Since the problem has been identified, I'll just go with the graphics you should display. A nice illustration of the nitrogen cycle will do wonders IMO.
That was what I was thinking. Now what kindof hypothese would you all suggest?

PS I wanted to test your advice on the quote, as well. Ok, just tried it.....mental note, leave out the =....! Ack, took it out and still don't get it....

Thanks again!
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Old 10-12-2006, 05:58 PM   #8
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I think I will go with two tank sizes. Hypothese:
Two tanks of different sizes should take the same time to cycle.
I will use a 100/125G vs. a 20 and match them as closely as possible. Does this sound like a good idea? Plus I will have two more tanks! LOL!
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Old 10-12-2006, 06:39 PM   #9
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maybe a plant with ferts/co2 and just ammonia (for nitrates)

i read something about different plants (if healthy) can kill other plants. they put out some chemical and you cant keep certain kinds of plants together. i know one was anacheris and i forgot all the other ones.. don't know how reliable that'll be though
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Old 10-12-2006, 06:47 PM   #10
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krap101, your first post, gave me the idea for two tanks. I was thinking the two tanks, sand and the fishless cycle (SW) with a raw cocktail shrimp. I will scale the smaller tank so it mirrors what's in the larger....or I could go with an even smaller tank, for a more drastic effect....hmmm (maybe a bigger tank).
What do you all think?
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