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DIY Roomba filters
Replacement fish filter for less then 15 cents each
How to make a cheap Cascade 80 fish filter for your fishy friends
Homemade Air Purifier & Cat Litter Box Air Filter
Cheap HEPA air filter
How to Build a Countertop Drinking Water Filter to Remove Fluoride or Chlorine
cheap homemade aquarium filter
DIY Replacement AIR Filters
Building a Hamburger Matten Filter (HMF) for an aquarium
$25 air filtration system
Posted:Mar 7, 2009
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