Skimmer?

[allarounddude]

 

[bang guy]

 

[slice]

 

[allarounddude]

 

[allarounddude]

 

[jerth6932]

 

[bang guy]

 

[meowzer]

 

[snakeblitz33]

 

[scrapman]

Go for the skimmer! When you see what it extracts from your tank, you will be convinced!