 int en1 = 2; //1 is fill
 int step1 = 3;
 int dir1 = 4;
-int decantpump = 5;
-int fillpump = 6;
+int decantpump = 5; //decants SBR into Effluent Tanks
+int fillpump = 6; //fills the SBR from the GW tank
 int skimmer =7;
-int air = 9;
+int air = 9; //Controls the air pump
 int stir = 8;
 
 
-//This is hte analog pin for depth measurement
-int depth = A0;
+//This is the analog pin for depth measurement
+int depth = A0; //defines depth based off measurement coming from the sensor
 
 //These are other variables set up for calculations
 int x=0;

}
}

//calls stepper function abovre to remove sludge automatically
void sludgeremoval(){
  stepper(6400,1,2);//fills up tube. revolutions, 1st motor, "empty" dir
  stepper(1250,1,2);//empties(was 2500 steps, now 1250). revolutions, 1st motor, "empty" dir

  digitalWrite(en1, HIGH);
  lcd.begin(16, 2);
   if (! rtc.begin()) {
     lcd.print("Couldn't find RTC");
    while (1);
  }

