I had to take down a 56 gallon tank to move it 2 feet in order to get a 75 gallon tank in on the same wall. Intentions were to move all my fish from the 56 into the 75. Then move all my nano tank fish and macro algae over to the 56 gallon. After putting in 100lbs of live sand and new live rock in both tanks it dawned on me I was going to have to cycle the tanks again. I had 11 fish in my 56 gallon when I took it down that were in 5 gallon buckets. Did a little research and went down to Petco and bought a couple bottles of Fluval Cycle. Followed the instructions and added all 11 fish to the 75 gallon tank immediately. 2 days later added another dose as per instructions of Fluval Cycle as well as checking my systems ammonia, nitrite, and nitrates each day. After 2weeks I did not have to add the Fluval Cycle any more. Nitrates never went over .2 Tanks have been running for 8 months now corals growing since day one on both tanks, no lose of any fish except for a flame hawk that died in one of the buckets before I could get back from the store with a cheap Aqueon power filter for that bucket. This wasn't possible to do back in the 80's. Something you might look into.