Make a filter for mini aquarium from a plastic cup & aquarium air pumps - YouTube
DIY Aquarium mini filter using aerator - YouTube
DIY: Air Pump for Fish Tank with Plastic Bottle | Do not use Electricity - YouTube
Making Aquarium Sponge Filter DIY - YouTube
Super Easy $1 DIY Dual Purpose Filter for Small Fish Tank(2gals below) For Airpump and Water pump - YouTube
Make your own fish tank filter using a water bottle, air pump, plastic tubing, a sponge and ceramic filter media. I ma… | Diy fish tank, Fish tank, Aquarium filter