habs geschafft :))))
unsigned long Sprudel2currentMillis = millis();
if(Sprudel2currentMillis - Sprudel2previousMillis > Sprudel2intervalOff && Sprudel2State == LOW) {
Sprudel2previousMillis = Sprudel2currentMillis;
Sprudel2State = HIGH;
//digitalWrite(relais4, Sprudel2State);
digitalWrite(ledPin4, Sprudel2State);
Sprudel2intervalOff = random(1000, Sprudel2MAXOn);
}
if(Sprudel2currentMillis - Sprudel2previousMillis > Sprudel2intervalOn && Sprudel2State == HIGH) {
Sprudel2previousMillis = Sprudel2currentMillis;
Sprudel2State = LOW;
//digitalWrite(relais4, Sprudel2State);
digitalWrite(ledPin4, Sprudel2State);
Sprudel2intervalOn = random(1000, Sprudel2MAXOff);
}
Falls einer braucht 
danke uwefed <3 :))