Filter pad holder for imagitarium pro 3.7G aquarium

A blank filter cartridge enclosure for imagitarium pro 3.7G aquariums. These are relative cheap (60$) aquariums perfect for pico reef tanks. The stock filter (carbon and bioballs) are not suited for reef tank, hence replace them with this enclosure which allows using filter pads (economic and easily replacable) and chemical filtration media (chemipure blue nano, for example)

https://www.amazon.com/dp/B07CL36NKM