diff -r 30abc8024afe -r 509510586665 www/js/prod_edit.js
--- a/www/js/prod_edit.js	Fri Jun 18 15:26:55 2021 +0200
+++ b/www/js/prod_edit.js	Fri Jun 18 21:26:28 2021 +0200
@@ -6051,7 +6051,7 @@
  $('#w2_name').jqxDropDownList({
   placeHolder: 'Kies meng water:',
   theme: theme,
-  source: waterlist,
+  source: water2list,
   displayMember: 'name',
   width: 250,
   height: 27,
@@ -6061,7 +6061,13 @@
  $('#w2_name').on('select', function(event) {
   if (event.args) {
    var datarecord, index = event.args.index;
-   datarecord = waterlist.records[index];
+   datarecord = water2list.records[index];
+   if (index == 0) {
+    dataRecord.w2_amount = 0;
+    $('#w2_amount').val(0);
+    dataRecord.w1_amount = mash_infuse;
+    $('#w1_amount').val(mash_infuse);
+   }
    dataRecord.w2_name = datarecord.name;
    $('#w2_calcium').val(datarecord.calcium);
    dataRecord.w2_calcium = datarecord.calcium;