yeah...there's aggression to the silvers but nothing too serious...too many for him to focus on...
i feed 2 dozen market shrimp a day...atleast that if not more...so i do a 10% water change daily along with vacuuming the bottom for crap...literally with all those plecos...
i use a typical wet/dry filter with daily changing of the filter floss and cleaning of the prefilter...i use a strong powerhead to turn the water to simulate a current and stir up crap...again, literally...hahahaha...there, that's the "secret" of me constantly packing in fish and attempting to grow out monsters. the tank is strategically place by the back sliding glass door for easy maintenance...