   int val=Wire.read();
   switch (val) {
     case 1:
-      Serial.println("Success");
+      //Serial.println("Success");
       break;
     case 2:
-      Serial.println("Failed");
+      //Serial.println("Failed");
       return String("Failed");
       break;
     case 254:
-      Serial.println("Pending");
+      //Serial.println("Pending");
       break;
     case 255:
-      Serial.println("No Data");
+      //Serial.println("No Data");
       break;
     default:
-      Serial.printlnf("Invalid response %d",val);
+      //Serial.printlnf("Invalid response %d",val);
       return String("Failed");
   }
 

    commandString.concat("4.00");
  if(arg=="high")
    commandString.concat("10.00");
  Serial.println(executeRequest(PH_ADDRESS,commandString));
  return 0;
}

int calibrate_orp(String arg) {
  String commandString = String("Cal,");
  commandString.concat(arg);
  executeRequest(ORP_ADDRESS,commandString);
  return 0;
}


  String orp_data = executeRequest(ORP_ADDRESS,"R");
  //Serial.print("ORP:");
  //Serial.println(orp_data);
  if (isdigit(orp_data.charAt(0))) {
    float current = String(orp_data).toFloat();
    if((orp == 0) | calibrationmode)
      orp = current;
    else
      orp = (orp + current) / 2;
