I just got a new carbon doser regulator for my calcium reactor and I’m new to this... I have the psi set at 15 and then the seconds per bubble set at 9... my question is I thought this meant 1 bubble every 9 seconds but it seems like at times there will be two or three bubbles right after each other in the bubble counter and about 5 seconds between the next group of bubbles... am I doing something wrong? Thanks in advance