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Photosynthesis Experiment in Elodea in ..

Wishing you well, -Sabrina>The Beginner Plant "Anacharis", Elodea and EgeriaHi, I am doing a science project that involvesElodea. After reading your article, I realized that I wasrequired to use the author, latest date updated, and name ofinstitution for my bibliography. I was wondering if theremight be a way for you to email me the above. Thank you verymuch for your help. Please e-mail me if you can or cannotanswer the above.

Bob Fenner>Anacharis, elodea and Egeria Your article on the website isinformative, but could you tell me what are the legal issues regardingsale and use of these plants for outdoor use?

Lab: Exploring the Rate of Photosynthesis - The Biology …

Another way to utilize NilocG Enhance Seachem Flourish Excel for bioavailable carbon (CO2) in a better, staggered way, rather than all at once, is a calibrated drip system.
In this experiment I was able to get 20 drops per minute. I measured 20 drops and this was equal to a ¼ tsp. So 4 minutes would equal 1 tsp. There are 6 tsp in one fluid ounce. So at this rate you will go through a ounce in 24 minutes. Add the correct dosage for your aquarium size then add the water (RO or DI water is best to mix with Flourish).

Example: For a 50 gallon planted aquarium you would add one capful (5 mL) of Flourish Excel (or 5 mL of NilocG Enhance). Then, depending upon how long you would like to stagger the drip would determine the amount of water. For this example I would suggest 20 oz. of water to mix for 8 hours of drip (24 minutes per ounce x 20 ounces water/Flourish Excel solution).
With larger containers, longer dosing times can be achieved.
However, even though Flourish Excel or Enhance can remain active for 24 hours, from my experience I would suggest 8 hours for best results (keeping in mind that CO2 is not utilized by plants after dark as they use oxygen instead during non-photosynthetic periods).

this comes after a long growth period under"prime" conditions (see specs below) with no other problemsto any of the other plants. The Anacharis is not growing butare not falling apart, they appear stunted, my only hypotheses is,after the long growth period the original stems (rooted) have up tofive consecutive side shoots and combined are roughly two feet inlength.

Remove several leaves from around the cut end of the stem

I
would be more prepare next time so that I could get ready the
apparatus more quickly and get on with the experiment, I would finally
have left a gap of time between when the lamp was moved to a new
distance and the recording of the bubbles began so that the Elodea
could adapt to the new changes before running straight on with the
next set of the results.

This is an often misunderstood aspect of aquarium plant keeping.
There is so much anecdotal information that is out of date with more current aquarium/plant biochemistry information. Not only do plants need many of the minerals found in GH, but, just as important, potentially dangerous upward pH swings can occur if your GH is much below 50 ppm during peak plant photosynthesis.
For example, I observed a pH of 6.8 in the morning and then a pH of 7.4 in the afternoon in a tank where GH was low or almost non-existent.
:

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A: Carbon intake is a function of photosynthesis

A: Carbon intake is a function of photosynthesis. Based on this, it would be ideal to dose Flourish Excel during the day. But given that Flourish Excel can stay complexed as a carbon source for up to 24 hours before it dissipates, you can dose at any time of the day and the product will be available for the next 24 hours. Flourish Excel is not carbon dioxide and there is no impact on pH using Flourish Excel.

Plasmolysis in Elodea Plant Cells - Science NetLinks

Variables

Input - Light intensityis to be varied by increasing and decreasing
the distance from the light source to the plant

Output - The rate of photosynthesisis to be measured by counting the
bubbles of oxygen produced by the plant every two minutes, and
therefore finding the rate of photosynthesis

Control - The amount of water available to the Elodea will stay the
same level in the 400 cm3 beaker.

Cells - Awesome Science Teacher Resources

I would also give my self a longer time to
do the experiment in so I could get an even more reliable graph with a
limiting factor which could back up my evidence of photosynthesis.

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