Effects of Spectral Variation on Algae(biofuel) growth.

My research on growth rates in Algae with exposures to various visible spectras(the idea is to make the process safe for at home users) caused me to whip up a quick code for exploiiting the growth curves for maximizing the output at extraction time(etime).

int greent=;
int bluet=;
int redt=;

int maxb=;
int maxg=;
int maxr=;

int gpin = 13;
int bpin=11;
int rpin=10;

int levels=0; //sensor probe

int etime=; // dynamic input for extraction time, can be changed in program

void setup(){
    
  pinMode(gpin, OUTPUT); 
  pinMode(bpin, OUTPUT);
  pinMode(rpin, OUTPUT);
    
      pinMode(probe, INPUT);
    
    
  digitalWrite(bpin, LOW);
    digitalWrite(gpin, LOW);
      digitalWrite(rpin, LOW);


}

void loop(){
    
    levels= probe.val
    
    for(time< etime){ //take 'time' as processor clock time
        if( etime-time=< maxb){
            digitalWrite(bpin, HIGH);
                  digitalWrite(rpin, LOW);
                digitalWrite(gpin, LOW);

        }
        if(etime-time=<maxb/2){
     digitalWrite(gpin, HIGH);
      digitalWrite(bpin, LOW);
    digitalWrite(gpin, LOW);
        }
        
        if(levels>ideal && etime - time > threshold){
          digitalWrite(rpin, HIGH);
    digitalWrite(bpin, LOW);
    digitalWrite(gpin, LOW);

        }
    
}