BenjieC
New member
I got a 300 deluxe internal a few weeks ago. It's up and running and doing great. It has the RDII pump and I had a couple questions. Is it more advantageous to run the water level lower and the pump rpm higher or the other way around. Also there are a couple extra holes in the venturi, Top is for air intake, I assume the one off to the side is for O3, but what is the one on the bottom for. The manual didn't mention it. Thanks!!
anyone?