Nutrient Measurements
<%#= link_to "Add new measurement", editor_rafts_path, class: "btn btn-sm btn-primary" %> <%#= link_to "View all", editor_rafts_path, class: "btn btn-sm btn-secondary" %>
<%= line_chart @npk_measurement_data, title: "NPK", ytitle: "Concentration (mg/L)" %>
<%= line_chart @ammonium_measurement_data, title: "Ammonium", ytitle: "Concentration (mg/L)" %>