Water level sensor DIY

int H_pin=26;
int L_pin=25;
int B=27;
int G=14;
int R=12;
int H_State=0;
int L_State=0;
long lasttimeLoop2=0;
long lasttimeLEDFalsh=0;
void setup() {
  // put your setup code Here, to run once:
  Serial.begin(115200);
  pinMode(H_pin,INPUT);
  pinMode(L_pin,INPUT);
  pinMode(B,OUTPUT);
  pinMode(G,OUTPUT);
  pinMode(R,OUTPUT);
}

void loop() {
  // put your main code Here, to run repeatedly:
  waterSensorLED();
  waterDisplay();
}

void waterDisplay(){
  if(millis()-lasttimeLoop2>1000){
    Serial.print("H_State=");
    Serial.print(H_State);
    Serial.print(",L_State=");
    Serial.print(L_State);
    Serial.println();  
    lasttimeLoop2=millis();
  }
}
void waterSensorLED(){
  H_State=digitalRead(H_pin);
  L_State=digitalRead(L_pin);
  
  if(H_State==1 and L_State==1){
    digitalWrite(G,1);
    digitalWrite(B,0);
    digitalWrite(R,0);
  }
  if(H_State==0 and L_State==1){
    if(millis()-lasttimeLEDFalsh>0 and millis()-lasttimeLEDFalsh<500){
      digitalWrite(G,1);
      digitalWrite(B,0);
      digitalWrite(R,1);  
    }
    if(millis()-lasttimeLEDFalsh>500 and millis()-lasttimeLEDFalsh<1000){
      digitalWrite(G,0);
      digitalWrite(B,0);
      digitalWrite(R,0);
    }
    if(millis()-lasttimeLEDFalsh>1000){
      lasttimeLEDFalsh=millis();
    }
  }
  if(H_State==0 and L_State==0){
    digitalWrite(G,0);
    digitalWrite(B,0);
    digitalWrite(R,1);
  }  
}