I haven't taken any of my current skimmer in action, but here are some of my old skimmers:
A DIY spray injection I made:
Here's my DIY beckett skimmer. The beckett goes right through the collection cup. This took a lot of thinking:
And the collection cup:
Here's another DIY spray injection skimmer I made:
Here's a 4' tall skimmer that I was running on my 46 gallon bowfront. It's a beckett that I made:
And lastly, another DIY beckett that I made - the simplest of all the designs:
