Scientific Anglers Air Cel Bass Fly Fishing Line - Why make things complicated? Scientific Anglers Air Cel Bass fly line is a simple, no-frills, weight-forward floating fly line perfect for throwing dry flies, nymphs, and streamers to bass in streams, rivers, or lakes. It may not cost a lot, but that certainly doesn’t mean the Air Cel won’t get the job done. Designed for bass fishing with a 7- or 8-weight rod