diff -r 39d4b9e7b447 -r 0efba09a694c www/js/prod_edit.js
--- a/www/js/prod_edit.js	Thu Jan 30 15:44:00 2020 +0100
+++ b/www/js/prod_edit.js	Sun Feb 02 13:20:28 2020 +0100
@@ -3171,10 +3171,12 @@
   } else {
    setRangeIndicator('calcium', 'normaal');
   }
-  if (magnesium >= 0 && magnesium <= 30) {
+  if (magnesium < 10) {
+   setRangeIndicator('magnesium', 'laag');
+  } else if (magnesium > 30) {
+   setRangeIndicator('magnesium', 'hoog');
+  } else {
    setRangeIndicator('magnesium', 'normaal');
-  } else {
-   setRangeIndicator('magnesium', 'hoog');
   }
   if (sodium <= 150) {
    setRangeIndicator('sodium', 'normaal');
@@ -5683,7 +5685,7 @@
  // Water treated
  $('#wb_calcium').jqxTooltip({ content: 'De ideale hoeveelheid Calcium is tussen 40 en 150.'});
  $('#wb_calcium').jqxNumberInput(Show1wat);
- $('#wb_magnesium').jqxTooltip({ content: 'De ideale hoeveelheid Magnesium is lager dan 30.'});
+ $('#wb_magnesium').jqxTooltip({ content: 'De ideale hoeveelheid Magnesium is tusse 10 en 30.'});
  $('#wb_magnesium').jqxNumberInput(Show1wat);
  $('#wb_sodium').jqxTooltip({ content: 'De ideale hoeveelheid Natrium is lager dan 150.'});
  $('#wb_sodium').jqxNumberInput(Show1wat);