Originally, our water-based system was hooked up to the turtle habitat, in the hopes that the plants would utilize the excess nutrients for growth. What we quickly realized is our plants stalled in their growth which led us to conclude that there weren't enough excess nutrients (nitrogen, in particular) to go around. This meant we would need to add nutrients into the system, but doing so would affect the pH of the turtle habitat.
We made the decision to transition to a hydroponics system, where water would be cycled in a closed bucket system versus the turtle habitat. This means we can adjust nutrient levels as needed without negative impact to Spaghetti, our turtle.