The applicant must have at least 3 years of paid experience with the care of elasmobranches and large life support systems. This will include but is not limited to high pressure sand filters, fluidized bed filters, fractionators, biotower filters, ozone generators, UV sterilizers, commercial heaters, chillers and chemical filtration. The candidate must also have extensive knowledge of water quality requirements for those systems including the understanding of the nitrification cycle, pH and buffering system, dissolved oxygen and all other elements that can affect the animals in the exhibit. 