diff --git a/flows/main.json b/flows/main.json
index 287dc1f..aa753b6 100644
--- a/flows/main.json
+++ b/flows/main.json
@@ -1908,7 +1908,7 @@
         "height": 0,
         "passthru": true,
         "mode": "text",
-        "delay": "1000",
+        "delay": "0",
         "topic": "sample_ship",
         "x": 670,
         "y": 80,
@@ -1988,7 +1988,7 @@
         "height": 0,
         "passthru": true,
         "mode": "text",
-        "delay": "1000",
+        "delay": "0",
         "topic": "sample_operator",
         "x": 650,
         "y": 160,
@@ -2012,7 +2012,7 @@
         "height": 0,
         "passthru": true,
         "mode": "text",
-        "delay": "1000",
+        "delay": "0",
         "topic": "sample_project",
         "x": 660,
         "y": 40,
@@ -2035,7 +2035,7 @@
         "height": 0,
         "passthru": true,
         "mode": "text",
-        "delay": "1000",
+        "delay": "0",
         "topic": "sample_id",
         "x": 670,
         "y": 120,
@@ -3565,7 +3565,7 @@
         "type": "function",
         "z": "b771c342.49603",
         "name": "get sample_projet",
-        "func": "msg.payload = msg.payload.sample_project;\nreturn msg;",
+        "func": "msg.payload = msg.payload.sample_project;\nglobal.set(\"sample_projet\",msg.payload);\nreturn msg;",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -3583,7 +3583,7 @@
         "type": "function",
         "z": "b771c342.49603",
         "name": "get sample_ship",
-        "func": "msg.payload = msg.payload.sample_ship;\nreturn msg;",
+        "func": "msg.payload = msg.payload.sample_ship;\nglobal.set(\"sample_ship\",msg.payload);\nreturn msg;",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -3601,7 +3601,7 @@
         "type": "function",
         "z": "b771c342.49603",
         "name": "get sample_id",
-        "func": "msg.payload = msg.payload.sample_id;\nreturn msg;",
+        "func": "msg.payload = msg.payload.sample_id;\nglobal.set(\"sample_id\",msg.payload);\nreturn msg;",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -3619,7 +3619,7 @@
         "type": "function",
         "z": "b771c342.49603",
         "name": "get sample_operator",
-        "func": "msg.payload = msg.payload.sample_operator;\nreturn msg;",
+        "func": "msg.payload = msg.payload.sample_operator;\nglobal.set(\"sample_operator\",msg.payload);\nreturn msg;",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -3637,7 +3637,7 @@
         "type": "function",
         "z": "b771c342.49603",
         "name": "get sample_sampling_gear",
-        "func": "if (msg.payload.sample_sampling_gear === null){\n    msg.payload = \"net\";\n}\nelse\n{\n    msg.payload = msg.payload.sample_sampling_gear;\n}\nreturn msg;",
+        "func": "if (msg.payload.sample_sampling_gear === null){\n    msg.payload = \"net\";\n}\nelse\n{\n    msg.payload = msg.payload.sample_sampling_gear;\n}\nglobal.set(\"sample_sampling_gear\",msg.payload);\nreturn msg;",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -3646,7 +3646,8 @@
         "y": 200,
         "wires": [
             [
-                "fcfc31ae.af3af"
+                "fcfc31ae.af3af",
+                "46eb1bf8.3dc5f4"
             ]
         ]
     },
@@ -3786,9 +3787,9 @@
                 "45911c98.2bd83c",
                 "1e09a4ab.72996b",
                 "296c73f.78ff10c",
-                "f408a273.4fb538",
                 "8dff1648.82e42",
-                "9f04c5ec.75f3d8"
+                "9f04c5ec.75f3d8",
+                "f408a273.4fb538"
             ]
         ]
     },
@@ -4187,7 +4188,7 @@
         "height": 1,
         "passthru": true,
         "mode": "number",
-        "delay": "1000",
+        "delay": "0",
         "topic": "object_depth_max",
         "x": 650,
         "y": 240,
@@ -4210,7 +4211,7 @@
         "height": 1,
         "passthru": true,
         "mode": "number",
-        "delay": "1000",
+        "delay": "0",
         "topic": "object_depth_min",
         "x": 650,
         "y": 280,
@@ -5250,9 +5251,9 @@
         "id": "cbb123ab.fd3428",
         "type": "ui_ui_control",
         "z": "b771c342.49603",
-        "name": "",
+        "name": "show/hide net groups",
         "events": "change",
-        "x": 1280,
+        "x": 1320,
         "y": 260,
         "wires": [
             []
@@ -5414,7 +5415,7 @@
         "height": 1,
         "passthru": true,
         "mode": "number",
-        "delay": "1000",
+        "delay": "0",
         "topic": "sample_concentrated_sample_volume",
         "x": 590,
         "y": 360,
@@ -5437,7 +5438,7 @@
         "height": 1,
         "passthru": true,
         "mode": "number",
-        "delay": "1000",
+        "delay": "0",
         "topic": "sample_gear_net_opening",
         "x": 620,
         "y": 320,
@@ -7294,7 +7295,7 @@
             ],
             [],
             []
-            ]
+        ]
     },
     {
         "id": "2dc762df.08cd7e",
@@ -7622,18 +7623,18 @@
         "id": "516375fd.2ed61c",
         "type": "ui_text_input",
         "z": "b771c342.49603",
-        "name": "sample_total_volume_start",
+        "name": "sample_total_flowmeter_start",
         "label": "Decknet flowmeter start",
-        "tooltip": "",
+        "tooltip": "in L",
         "group": "cf5d9f0e.d57e7",
         "order": 5,
         "width": 5,
         "height": 1,
-        "passthru": true,
+        "passthru": false,
         "mode": "text",
-        "delay": 300,
-        "topic": "sample_total_volume_start",
-        "x": 1340,
+        "delay": "0",
+        "topic": "sample_total_flowmeter_start",
+        "x": 1350,
         "y": 180,
         "wires": [
             [
@@ -7645,17 +7646,17 @@
         "id": "470e382a.25691",
         "type": "ui_text_input",
         "z": "b771c342.49603",
-        "name": "sample_total_volume_end",
+        "name": "sample_total_flowmeter_end",
         "label": "Decknet flowmeter end",
-        "tooltip": "",
+        "tooltip": "in L",
         "group": "cf5d9f0e.d57e7",
         "order": 6,
         "width": 5,
         "height": 1,
-        "passthru": true,
+        "passthru": false,
         "mode": "text",
-        "delay": 300,
-        "topic": "sample_total_volume_end",
+        "delay": "0",
+        "topic": "sample_total_flowmeter_end",
         "x": 1340,
         "y": 220,
         "wires": [
@@ -7669,7 +7670,7 @@
         "type": "function",
         "z": "b771c342.49603",
         "name": "Store sample_total_volume",
-        "func": "if (msg.topic == \"sample_total_volume_start\"){\n    context.set(\"sample_total_volume_start\", msg.payload);\n}\nif (msg.topic == \"sample_total_volume_end\"){\n    context.set(\"sample_total_volume_end\", msg.payload);\n}\nif (context.keys().length == 2){\n    sample_total_volume = context.get(\"sample_total_volume_end\") - context.get(\"sample_total_volume_start\");\n    global.set(\"sample_total_volume\", sample_total_volume);\n}\n\n",
+        "func": "if (msg.topic == \"sample_total_flowmeter_start\"){\n    context.set(\"sample_total_flowmeter_start\", msg.payload);\n}\nif (msg.topic == \"sample_total_flowmeter_end\"){\n    context.set(\"sample_total_flowmeter_end\", msg.payload);\n}\nif (context.keys().length == 2){\n    sample_total_volume = context.get(\"sample_total_flowmeter_end\") - context.get(\"sample_total_flowmeter_start\");\n    global.set(\"sample_total_volume\", sample_total_volume);\n}\n\n",
         "outputs": 2,
         "noerr": 0,
         "initialize": "",
@@ -7694,7 +7695,7 @@
         "order": 4,
         "width": 10,
         "height": 1,
-        "format": "<div style=\"line-height: 100%;\">\n    <p class=\"formlabel\" style=\"font-size: larger;\">Decknet flowmeter readings</p>\n    <p style=\"font-size: smaller;\">Those values are used to calculate <font style=\"font-family: mono;\">sample_total_volume</font>.</p>\n</div>\n",
+        "format": "<div style=\"line-height: 100%;\">\n    <p class=\"formlabel\" style=\"font-size: larger;\">Decknet flowmeter readings</p>\n    <p style=\"font-size: smaller;\">Those values are used to calculate <font style=\"font-family: mono;\">sample_total_volume</font>. Values are in L.</p>\n</div>\n",
         "storeOutMessages": true,
         "fwdInMessages": true,
         "resendOnRefresh": true,
@@ -8236,7 +8237,7 @@
         "type": "function",
         "z": "b771c342.49603",
         "name": "get sample_gear_net_opening",
-        "func": "if (msg.payload.sample_gear_net_opening === null){\n    msg.payload = 0;\n}\nelse\n{\n    msg.payload = msg.payload.sample_gear_net_opening;\n}\nreturn msg;",
+        "func": "if (msg.payload.sample_gear_net_opening === null){\n    msg.payload = 0;\n}\nelse\n{\n    msg.payload = msg.payload.sample_gear_net_opening;\n}\nglobal.set(\"sample_gear_net_opening\",msg.payload);\nreturn msg;",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -8286,7 +8287,7 @@
         "type": "function",
         "z": "b771c342.49603",
         "name": "get object_depth_max",
-        "func": "if (msg.payload.object_depth_max === null){\n    msg.payload = 0;\n}\nelse\n{\n    msg.payload = msg.payload.object_depth_max;\n}\nreturn msg;",
+        "func": "if (msg.payload.object_depth_max === null){\n    msg.payload = 0;\n}\nelse\n{\n    msg.payload = msg.payload.object_depth_max;\n}\nglobal.set(\"object_depth_max\",msg.payload);\nreturn msg;",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -8304,7 +8305,7 @@
         "type": "function",
         "z": "b771c342.49603",
         "name": "get object_depth_min",
-        "func": "if (msg.payload.object_depth_min === null){\n    msg.payload = 0;\n}\nelse\n{\n    msg.payload = msg.payload.object_depth_min;\n}\nreturn msg;",
+        "func": "if (msg.payload.object_depth_min === null){\n    msg.payload = 0;\n}\nelse\n{\n    msg.payload = msg.payload.object_depth_min;\n}\nglobal.set(\"object_depth_min\",msg.payload);\nreturn msg;",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",