im with zephrant on teh swirl design, i thought of it that way for a while, so much goes in and so much goes out, if some is staying in for 5 minutes then some is ony staying in for 5 seconds.
Has anyone built identical skimmers with and without the swirl design and seen differences?
Zeph since you mentioned this in another thread maybe you should take on the job of building another one with a swirl design and see which peforms the best.