- Joined
- Oct 10, 2017
- Messages
- 88
- Reaction score
- 85
- Location
- Richland, WA
- What state or country do you live in
- Washington
I lured twin gorilla crabs out of the TBS rock this weekend. I had seen one of them, so I set up a glass with a bit of shrimp on the bottom (held down by some rubble) and tilted it at 45 degrees against the rock where I saw him. In the morning there were two crabs in the glass! Hopefully that is all of them.


One was a beautiful small reef tank I think from Brazil, where you couldn't see any plumbing at all, and the only circulation was a single closed loop outlet pointing straight up. So I decided to try that with two Vectra L1, one in each rock pile. The second idea I borrowed was from a tank that had the rock elevated and closed loop outlets flowing under the rock to keep out detritus. What I did instead is I put all the rock on 3/4" HDPE cutting boards that I got from an online restaurant company. Then I did a single outlet pointing straight down, so it constantly hoses off the cutting board surface. So each of the closed loops has two outlets: one pointing straight up and one pointing straight down.














