This module gave me a greater understanding of water chemistry and quality and how to use it. Any aquarist knows about the nitrogen cycle and how trace elements are important for corals, but this really went in depth to explain the relationship between different elements and what they mean to our animals. It gave me a greater understanding of how to control water parameters and why. The course is super awesome and detailed! Way more in depth than anything I’ve ever learned about water chemistry. Even the topics I thought I knew were explained much more thoroughly and completely than my previous knowledge.

Kyle G. McPheeters, Tennessee Aquarium, USA,