[slief]

Originally Posted by BnHelal

Hello
I need to choose best skimmer for my Reef tank 550 to 600 liters with heavy load an i am looking for Bubble King® Double Cone 180 + RD3 Speedy or Double Cone 200 + RD3 Speedy .which one is more effective for my reef tank?

Per your PM to me on Facebook and my reply. You need to quantify what your heavy load is? We consider a heavy load 1/2” (1.25 cm) of fish per display gallon (3.75 liters) which does NOT include the sump and refugium. And is your system 500-600l or is that your display size? This is important because when sizing a bubble king, you want to base the size on the display volume since sumps and refugiums do not contribute to the load. Sumps and refugiums reduce the load. That said, the Double Cone 200 would likely be oversized for your display volume and could be inconsistent. I’d more than likely lean towards the Double Cone 180 but would want to confirm the above details in terms of display size and actual load.