Thanks phishie. Yes, I have some experience. I've always had freshwater (mostly discus) and had a successful saltwater setup for 3 years until an early ice storm knocked out power for two weeks. Now I have a back up generator and this well cycled 50 gal. tank. I do have two large rocks (60 lbs. total) with abundant hide spots in them and three sides of the tank painted black. I was only mentioning "few rocks" to indicate that maximum swimming area was available. My 180 is in a friend's storage facility in another state, but he will bring it up in Sept., and I can set it up and cycle it before moving the shark. That way, the move will be only a few feet into as exact water etc. as possible. In the Scott Michael book on Aquarium Sharks and Rays, he makes mention of temporarily housing pups in as small as a 20 gal. long tank which made it easier for them to find food and get established so I thought I might try this 50 for 9-12 months. I am fastidious about water changes and try to be very careful not to overfeed. My main concern is that the shark would grow too large for the 50 before I can safely move him. I also have found some info that mentions 6-12 inches of growth per year and thought I might be cutting it close, but could be OK. Does this sound feasible?

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