AeroGarden AutoFlower Experiment

I've started having a few issues with water quantity now. The roots have completely filled up the 4 litre reservoir, making the available volume available for water to be minimal. On average I have been adding PH'd water every day. This is not too much of a hassle though and takes less than 5 minutes. As well as this, I had to defoliate the plants, removing about 40 leaves in total. The leaves were too bushy, and very very little light was penetrating the canopy and reaching the developing lower buds. I imagine this is something that will need to be done every week now, whilst being cautious to not overdo it and create too much stress for the plant. I decided to divert from the nutrient schedule slightly and repeat week 8, as the larger of my two plants was about two weeks behind the other - another reason why growing just one plant if using an Aerogarden is preferable.