Marine Fish Tank

I purchased a fish tank for the space and an anonymous hacker??? brought in a canister filter which someone put in the tank. I also noticed a diaphragm air pump floating around the space before the cleanup, was this intended as a donation?
I will be holding a starting a marine aquarium class in the space in a little while so if anyone is interested please let me know if you are keen and lets get some corals and fish in here!


cough Aquarium Cause