Results are amazing, couldn't ask for anything more really. I'm using 1 carrot per 3x3 bed with 16' of the drip tape per bed. I originally tried 10 and 12' but it just wan't enough. The beds are fulllllll of worms...

Low cost and really works! I wouldn't recommend it for systems with lots of sediment to filter out because it's a pain to clean. But as a fail-safe in systems with clean water, it's a great insurance policy.