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Old 10-12-2008, 07:32 PM   #21 (permalink)
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Default Re: Science Project Help

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Are you going to wait a few weeks to see if the plants grow well? Since you are dealing with a plant that is considered a weed I am uncertain if it will give you the results you want. True it didn't grow for me but my water is very soft. I only know of 1 other person whom had problem with this plant.
In order to do any test and have the results mean something you first have to get both tanks growing well, and about the same. Only then can you "dose" the tank with what you are testing, and watch to see what effect it had. I agree with dawntwister - that is a very easy plant to grow, but it can be temperamental and just die for no apparent reason. I found that the better I treated it, the more likely it seemed to be for it to die.
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Old 10-13-2008, 05:55 PM   #22 (permalink)
 
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Default Re: Science Project Help

I'm in a Pre-AP Science Class
and doing a science experiment is required by every student in Pre-AP
I know ill get 1st place at the campus fair( now there's more this year competition though), i have for the past 2 years, and always do something relating to botany. Ill probably place 1st or 2nd at District Fair, but don't really expect to place at the Houston Science and Engineering Fair (maybe just maybe honorable mention), but do plan to compete in I-Sweep International Sustainable World (Energy, Engineering, and Environment)
Project Olympiad. Ill be observing plant growth, discoloration, death of plants, etc.

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I'm doing a project in which i will test the effects of pharmaceuticals(medicine) on aquatic plants
So you are doing this to get a grade in a class?

Are you going to wait a few weeks to see if the plants grow well? Since you are dealing with a plant that is considered a weed I am uncertain if it will give you the results you want. True it didn't grow for me but my water is very soft. I only know of 1 other person whom had problem with this plant.
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Old 10-13-2008, 06:17 PM   #23 (permalink)
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Default Re: Science Project Help

That sounds very interesting! Be sure to let us know how you made out, and tell us some of your results too. I had my first aquarium when I was in high school, but I didn't have a clue how to make plants grow.
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Old 10-13-2008, 07:11 PM   #24 (permalink)
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Can't wait to hear the results.
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Old 10-14-2008, 02:29 PM   #25 (permalink)
 
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thanks for your encouragement ....
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Old 11-09-2008, 02:50 PM   #26 (permalink)
 
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Well after almost a month i finally finished my science project
and it turned out that the aquatic plants in the tank with the cough suppressants took less time to sprout new buds, but in the long run had a slower growth rate overall. Meanwhile the aquatic plants in the tank without the pharmaceuticals didn't sprout as fast but grew taller.

The filter in tank 1(tank w/ med.) bubbled after about 2 weeks and began showing signs of murky water. The gravel floor appeared to grow a white layer, which i believe was the medicine settling to the gravel floor. The plants had a brownish color to them.

The plants in tank 2(the ones w/o the med.) flourished and were greener, and had clear water. Below i will post some of my pictures from my experiment.

Note that i did not try to create the perfect aquatic environment so , of course it does not really display natural beauty but scientific success.







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Old 11-09-2008, 04:06 PM   #27 (permalink)
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Default Re: Science Project Help

Interesting. What kind of cough suppressant and how much? Did you add anything to the non-antitussive tank? And most importantly: did any of the plants in either tank show signs of severe coughing?

Seriously though, nice work and good luck! I have my own theories about what caused the bubbling and cloudiness, but I'm curious what you found.
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Old 11-10-2008, 08:03 AM   #28 (permalink)
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Why did you decide on cough syrup? I thought you were going to try something like baking soda. Have you tested the ph and kh? Oh, you know I found out the reason that plant didn't grow for me is because it will melt if aquarium salt is added and I had salt in my tank. You know there are many different salts you could test, calcium sulfate.
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Old 11-10-2008, 05:07 PM   #29 (permalink)
 
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Interesting. What kind of cough suppressant and how much? Did you add anything to the non-antitussive tank? And most importantly: did any of the plants in either tank show signs of severe coughing?

Seriously though, nice work and good luck! I have my own theories about what caused the bubbling and cloudiness, but I'm curious what you found.
I used Robitussin cough suppressant. No the tank without the added pharmaceuticals was basically a control tank just to see the contrast between a normal growing aquatic plant and the effects of pharmaceutical pollution..

Well i have just a hint that the plants in tank one seemed that the medicine had an effect that because the plant did not seem able to progress as fast as it should it seemed to think that if it sprouted then maybe it would survive the effects of the cough suppresent. Just a guess , though.

Thanks for every bodies support.
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Old 11-10-2008, 05:09 PM   #30 (permalink)
 
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Default Re: Science Project Help

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Originally Posted by dawntwister View Post
Why did you decide on cough syrup? I thought you were going to try something like baking soda. Have you tested the ph and kh? Oh, you know I found out the reason that plant didn't grow for me is because it will melt if aquarium salt is added and I had salt in my tank. You know there are many different salts you could test, calcium sulfate.
no that was what a member suggested i should try, but i took the simple path, and unfortunately the smellier too. Seriously, i still can't take the pharmaceutical smell out of the gravel and tank..
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