Hi, i just rescued a black edge eel, he was being kept in a 30gallon tank only half full with water, he is 19" long. I am brand new to SW. just set my first tank 2 months ago, it is 90 gallons FOWLR i only had 3 damsels, 2 emerald crab, and an urchin. Any advice would be appreciated, i have done my best to eel-proof my tank but any ideas on that would be helpful as well. Thank you