Initial testing of your aquarium
Test the light level on one computer at the exact same time that the other computer is testing the pH of the water in your aquarium. Take the readings for only 30 seconds. Refer to Technical Hints to see how to use DataLogger software to record light as one of the probes. Refer to Technical Hints to see how to use DataLogger software to record pH.
Compare your results with other groups by looking at Data Table A on the software. Refer to Technical Hints to see how to view the data inside the DataLogger software.
Answer Question 1 in "Analysis".
Create a spreadsheet to record light and pH readings. Columns should be made so that the same light reading is recorded alternately for an aquarium with just water, an aquarium with just water and Elodea, an aquarium with just water and fish, and an aquarium with water, Elodea and water. Refer to Technical Hints to see how to create a spreadsheet.
Select a location for your aquarium in the room that will have sufficient light during the day and will experience a dark cycle during the night.
