you can clean your cage every 2 - 3 weeks depending on how bad it smells. and i dont know if aquariums are easier to clean than cages because i never used a cage. but you only have to remove the old litter, rub all glass walls clean thoroughly with clear and warm water and then refill the aquarium with new litter. so it's no big deal to clean an aquarium. i hope i could help you :)
