So I'm really impressed with the dc12000 I'm on the 3rd bar and have more than plenty flow for a 75g...now the dp 4 doser is awesome and is from what I can see really accurate...I've tested all 4 pumps and they work..however I've set the times just hr ago and technically the 3rd interval at 1015 didn't go off, question is does the pump wait until 1st interval to start? Or am I doing something wrong?