This Skimmer is so simple to set-up, you just sit it in the sump & plug in the 2 pumps.

It has a compartment in which to place carbon & Phosphate remover.

There is a large sponge pad at the output end which filters out any micro-bubbles which would otherwise end up in the main tank.

The venturi's draw air from outside, this is to prevent PH drop which could occurr if using stale air from indoors.

My skimmer cup is emtied out every 3 days or as & when required.