Day 11

By today, we noticed that the third plants are no longer growing and even the healthiest plant is starting to brown a little. We had to adjust the pH from 5.8 and bring it up to 6.6 by adding a quarter of a teaspoon of pH up liquid to the water.

We had made an observation and think we found the possible problem with our plants. The air stones in our tank are directly under the first and second plant. These two plants are the weakest and show the least amount of growth. The third plant is not near the air stones and is the healthiest. We came to the conclusion that the air stones directly under the plants cause them to poorly grow. However, we did not fix this problem or adjust the air stones, because we are fearful that if we tamper with them now, our healthiest plant may die.