if (temp > tempThreshold) {
    unsigned long currentTime = millis();
    digitalWrite(fanPin, HIGH);
    if (!pumpActive && (currentTime - lastPumpTime >= pumpCooldown)) {
        digitalWrite(pumpPin, HIGH);
        delay(pumpActiveTime);
        digitalWrite(pumpPin, LOW);
        lastPumpTime = currentTime; 
    }
} else {
        digitalWrite(fanPin, LOW);
}