my home plant

After observing my plant (white) for plus minus 3 weeks. Many changes have occured, the initial height of the plant was 8cm and after measuring it once a week it has shown an increase in its height to be 2cm. The water that the plant has been put in has stayed clear and has not changed colour. There has been an addition of 15 new shoots to the plant and 20 leaves have turned yellow and died (turned brown and fell off). The plant has grown in diameter, branching further out. I have also noticed that the roots have shifted against the glass furthest away from the light. Overall the plant being the control has been doing really well. It is in a healthy condition.