You can use the MrHN aquarium overflow kit instead of aquarium overflow boxes. They both basically have the same function. MrHN overflow kit is always more economical than other products. Since aquarium overflow boxes cover a large area, they cannot be placed where you want and cause an ugly appearance. Since the MrHN overflow kit is small, you can install it wherever you want. MrHN aquarium overflow kit fits most aquariums. It can be easily installed in almost all aquariums. But since overflow boxes are specially produced, they do not fit most aquariums. MrHN overflow kit does not make any noise and does not cause noise. MrHN overflow kit works without making any noise. Other aquarium overflow cans often make noise and cause noise.