Here is a pic of a venturi, airline tubing is attached to a port
Many power heads have the port built in, but you need to attach a hose (airline tube) in order to produce bubbles for fractionation.
You can get a maxijet 900 and attach an airline to it. Easy peasy and cheap. You'll likely find out however that these seaclones are NOT great skimmers, and you'll get a ton more skimmate with a different model.
You must use a pump that has enough pressure to produce venturi action, at the amount of head pressure it has to overcome (the height of the mixing chamber.
There are many, I have found that for my skimmers a 950gph pump is about minimal. Mag drives, Laguna have worked for me, but I also build DIY skimmers as opposed to using commercial ones.
There are pumps that have a special apparatus that chops large bubbles into small ones, in order to produce a more effective foam.
Take your skimmer and pump down to Randy's Fish Palace and he will explain how it works. Its hard to explain to you if you dont understand what were talking about..
Take your skimmer and pump down to Randy's Fish Palace and he will explain how it works. Its hard to explain to you if you dont understand what were talking about..