   measurevol();
   lcd.setCursor(0,1);
   lcd.print(tank);
+  int starttime = millis();
+  while (((millis()-starttime)<120000)&&(tank>23)){ } //2 min
 }
 void skim(){//skim during settle
   lcd.clear();

    }
  }
  //write conditions for running sequence here and add functions
  /*fill();
  delay(5000);
  aeration();
  delay(5000);
  settle();
  delay(5000);
  decant();
  delay(5000);
  rest();
  delay(5000);*/
  decant();
}
void fill(){//check depth and fill until level is 25gal plus stir
  lcd.clear();

  lcd.setCursor(0,1);
  lcd.print(tank);
  int starttime = millis();
   while (tank<15){
    digitalWrite(fillpump, HIGH);
    measurevol();
    delay(20000);}
    digitalWrite(fillpump, LOW);
}
void aeration(){//check depth and keep air on and pumps off for time period
