Also to add: 55 gallon, 1 70 gallon hob, 2 big sponge filters.
Used to be my adult angel, and 3 babies (2 are a little bit bigger than the tiny one) and a handful of myself snails I raised, 1 baby brislenose pleco.
I do water changed every 2 weeks
I've had my adult angel for more than a year ...