I'm not highjack your thread but here is my 40B (~50G) for my antennarius maculatus.
Let's see you can spot it, it's quite easy to see him at this spot, most of the time I will spend like 5~10 mins to identify it location (sorry for crappy phone camera, my good phone got fired recently).
This one a closer focus if you didn't see it in the first video.
Those damsels are feeders...yeah...yeah I knew it's expensive feeders (I don't use freshwater feeders) but I like to keep my monster close to it nature environment while in my care.