a) Error sources pinpointed precisely- From the lack of labeling to the incorrect growing to the fish deaths
b) Well-controlled/accounted for variables- Same amount of light, identical spacing, seedlings/trials, height and age of seedlings; if anything did happen, it was swiftly corrected and accounted for
Potential for improvement:
a) Control Group- Could have added a batch of seedlings that grew outside the experimental setup but in a similar growth medium (regularly moistened clay pellets)
b) Procedure- Could go into more detail; leaves readers wondering about the dimensions of the cups, width of Styrofoam raft, and other dimensions of the setup
Questions that arose:
a) How can growers prevent fungal growth from occurring on deep-water culture plants?
b) What is the optimal number of fish that can be in the tank so that a maximum amount of nitrates can be produced without resulting in fish deaths from ammonia poisoning?