Using seconds with rtc for less than a minute timer

Projects Programming
10

so far I keep getting errors

#include <RTClib.h>               // Real time clock
#include <DHT.h>                  // Air Temp Humid Sensor
#include <OneWire.h>              // Sensors (water temp) connected to one wire
#include <DallasTemperature.h>    // Water Temp Sensor
#include <LiquidCrystal_I2C.h>    // Lcd display 
const int lightingPin = 4;
const int bulblightingPin = 9;
const int pumpPin = 6;
RTC_DS3231 rtc;                    // Init the DS3231 using the hardware interface (Nano A4=SDA A5=SCL)
unsigned long currentTime;
unsigned long previousTime = 0;
int marker = 0;
int lampState =0;
unsigned long pumpState =0;
unsigned long hour = 0;
int pumpHour =0;
char dateBuffer [12];
                        


//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Lcd Display ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);  // Set the LCD I2C address
                                                                // set the LCD address to 0x3F or 0x27 depending what display using for a 16 chars 2 line display
                                                                // Set the pins on the I2C chip used for LCD connections:
                                                                // addr, en,rw,rs,d4,d5,d6,d7,bl,blpol           

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Air Temperature & Humidity sensor ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 #define DHTPIN 2             // what pin we're connected to
 #define DHTTYPE DHT22        // DHT 22  (AM2302)
 DHT dht(DHTPIN, DHTTYPE);    // Initialize DHT sensor
 int chk;
 float hum;                   //Stores humidity value
 float temp;                  //Stores temperature value

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Water Temperature sensor ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 #define ONE_WIRE_BUS 7
 OneWire oneWire(ONE_WIRE_BUS);          // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
 DallasTemperature sensors(&oneWire);    // Pass our oneWire reference to Dallas Temperature.


 //########################################################################## SETUP ################################################################################################### 
void setup()
{
  Serial.begin(9600);
  rtc.begin();             // Initialize the rtc object
  lcd.begin(16,2);         // initialize the lcd for 16 chars 2 lines
  lcd.backlight();         // Turns backlight LCD on
  sensors.begin();         // water temp sensor
  dht.begin();             // temp humid sensor 
  
  pinMode (lightingPin, OUTPUT);
  digitalWrite (lightingPin, HIGH);
  pinMode (bulblightingPin, OUTPUT);
  digitalWrite (bulblightingPin, HIGH); 
  pinMode (pumpPin, OUTPUT);
  digitalWrite (pumpPin, HIGH);
   
  
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Uncomment to set the date and time ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
  // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));      // Automatic RTC DS3231 time update from computer clock while compiling
  // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));       // This line sets the RTC with an explicit date & time for example to set January 21, 2014 at 3am 
    
    
}

 //########################################################################## LOOP ################################################################################################### 

void loop()
{
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OUTPUT REAL TIME CLOCK ON SERIAL ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
   DateTime now = rtc.now();

   sprintf(dateBuffer,"%02u-%02u-%04u ",now.day(),now.month(),now.year());
   Serial.print(dateBuffer);
   sprintf(dateBuffer,"%02u:%02u:%02u ",now.hour(),now.minute(),now.second());
   Serial.println(dateBuffer);
 
  

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ lighting RELAY ACTION ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 
  lampState = (now.hour()*60) + now.minute();         // Hour times it by 60 add the minutes, 18 hour cycle 5am = 300 11pm = 1380
                                                      // 12 hour cycle 6am = 360 12am = 00
                                                      // 14 hour cycle 6am = 360 2am = 1200
                                                    
 if (lampState >= 360 && lampState < 1200){
    digitalWrite (lightingPin, HIGH);
    digitalWrite (bulblightingPin, LOW);
    Serial.println("Lights ON");
 }
  else {
    digitalWrite (lightingPin, LOW);
    digitalWrite (bulblightingPin, HIGH);
    Serial.println("Lights OFF");
 }  

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Water Pump Relay Times ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  now.hour() = pumpHour;
  pumpState = (pumpHour*3600) + (now.minute()*60) + now.second();            
                                                                        
 
   if (pumpState >= 55440 && pumpState < 55485){
      digitalWrite (pumpPin, LOW);
      Serial.println("Water Pump ON");                                 
   }
   else { 
    digitalWrite (pumpPin, HIGH);
    Serial.println("Water Pump OFF");
  }

lvalue required as left operand of asignment