Water changes and Vacuum gravel starting again! 7 Tanks done for now! Large Pleco got stuck in driftwood and died in 380 gal., someone ate his tail. Sick Oscar and 1 more Clown loaches died in 155gal. bowfront, about 8 days ago. Added more cannister fliters to tanks, and an AC110 to 155gal., all else good. Checking on 60" lights on craigslist, also decided to cover tower in 388gal. with black acrylic.