Week 2 of small scale experiment

Its week 2 day 4 we've just taken the measurements of the root lengths in both plants and the height (in cm) of the plants themselves.
Below we have the stats of the plants.

Control Plants
1. 1.4cm    2. 3.8cm
3. 4.1cm    4. 2.6cm
Average height= 2.975cm
Control Plants root length= 17.5cm

Co2 Plants
1. 3.8cm    2. 3.2cm
3. 2.7cm    4. 4.1cm
Average height= 3.45cm
Co2 Plants root length= 8.2cm

Its week 2 day 3 and we've been checking the growth of the plants daily and today we got quite a surprise when we removed both Styrofoam blocks from the water we noticed that the Co2 plants are looking healthier and taller then the control plants but the control plants have much longer roots like a difference of about 5 inches.

                                Co2 roots                                                           O2 roots
Its week 2 of the small scale experiment the plants have grow about 1 inch out of their container but we noticed a tiny change in the color between the control plants and the Co2 plants. The control plants are a light healthy looking green when the Co2 plants are a darker green but still healthy and the same size.