I gave two presentations. The first one was about sumps. The second one was about how to build one with acrylic. Since I did the presenting, and really what would be the point of a picture of a guy standing by a powerpoint slide, we'll just move on to the frag swap pictures.
I have to say I loved these little frag-holding tanks.
Each were lighted with these PC light fixtures.
A small powerhead maintained circulation and a heater was under the rack.
Another tank contained frags and even a clam!
Frags were brought in a bucket that had levels of eggcrate so that they could be stacked. A bucket held many frags. You can see them stacked in the third picture of this post.