My friend told me to develop a frag rack for him and I spent 2 month to busy with the magent.
The magnet is a SUPER MAGNET!!!! The magnetic attraction force is horrible, I almost get my finger hurt while I put them together to test.
And then I work out 2 size of the arcylic rack by laser machine. Now is waiting for the plug on the rack.
Rubber ring, I still need to find a rubber ring!!! And then i am able to build up my own small coral. LOL!!