hydroponics relays only

#!/usr/bin/env python
import serial
import RPi.GPIO as GPIO
import cayenne.client
import time
import datetime
from Tkinter import *
root = Tk()
LEDontime = 22
LEDofftime = 6
pHCounter = 14
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
pins = [26, 19, 13, 06]
GPIO.setup(pins, GPIO.OUT)
pHDown = 26
pHUp = 19
TEC = 13
LED = 06
GPIO.output(pins, GPIO.LOW)
time.sleep(0.5)
GPIO.output(pins, GPIO.HIGH)
time.sleep(0.5)
GPIO.output(pins, GPIO.LOW)
time.sleep(0.5)
GPIO.output(pins, GPIO.HIGH)
time.sleep(0.5)


print "cleaning up relays"


ser=serial.Serial("/dev/ttyUSB0",9600)  #change USB as found from ls /dev/tty/USB*
ser.baudrate=9600
# Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
MQTT_USERNAME  = "61334000-fc63-11e7-848a-61efd1c01e7d"
MQTT_PASSWORD  = "ca292be60d160c1e96bf6074bdf77710949036a6"
MQTT_CLIENT_ID = "33b92b50-125a-11e8-b42d-698bd45831f1"


client = cayenne.client.CayenneMQTTClient()

client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID)

i=0
timestamp = 0
value=ser.readline()
time.sleep(5)
while True:

    hourTime = datetime.datetime.now().strftime("%H")
    minTime = datetime.datetime.now().strftime("%M")
    print hourTime
    if int(hourTime) >= 22:
        GPIO.output(LED, GPIO.LOW)
        print "shit"
    client.loop()
    value=ser.readline()


    #pH = float(value[1:5])
    pH = 8
    humidity = float(value[6:11])
    temp = float(value[12:17])
    wtemp = float(value[18:])
    #print(value)
    #print(value[1:5])
    #print(value[5:10])
    #print(value[10:15])


    #-------- allow 15 ph tests before adjusting ph
    if pHCounter >= 15:
        ph = 8
        if pH < 5:
            print pH
            GPIO.output(pHUp, GPIO.LOW)
            GPIO.output(pHDown, GPIO.HIGH)
        if pH > 6 and pH < 7:
            print pH
            GPIO.output(pHUp, GPIO.HIGH)
            GPIO.output(pHDown, GPIO.HIGH)

        if pH > 7:
            print pH
            GPIO.output(pHUp, GPIO.HIGH)
            GPIO.output(pHDown, GPIO.LOW)





    if (time.time() > timestamp + 10):
        client.celsiusWrite(1, temp)
        client.luxWrite(2, humidity)
        client.luxWrite(3, pH)
        pHCounter += 1
        print ("pH Tests done: " + str(pHCounter))
        client.celsiusWrite(4, wtemp)
        timestamp = time.time()
        i = i+1