I don't have more aquariums than that/those described above.
when in doubt do a water change
150 gal. (1 black fin Pacu) Modified API Nexx modular filterX3+ a 1 litter bottle Moving Bed filter w/straws + DIY UFAS+ modified PowerHead to an aerated bacteria filter. 90 gal. (2 black fin Pacu) (1 red fin Pacu)Modified API modular nexx filterX3 + modified PwerHead to a biological aerated filter + 500gph aerated powerhead. 26 gal. Planted (6mollies) (12platty wags) (1 Bristol nose placo) (4cory cats) (1clown loach) (betta) 20gal sump project for the 150 or 90