So helpful! I have a koi pond, not an aquarium, and was at my wit's end to find out what had my fish acting strangely. Trop-Aquarium was suggested to me as a possible place to find answers. Lisa was so kind and listened carefully, looked at my video (of fish lying in a heap, barely moving), answered all my questions and made suggestions. My fish are mostly back to normal now, and thanks to Lisa's reassurances, I am no longer worried to death. I can only imagine how great this store would be if you had an aquarium.