The best replacement for filters is sand filters.

The best alternatives to filters are rated as following:
★★★★★  sand filters
★★★★★  cartridge filters
★★★★  de filters
★★★★  interceptors
★★  facets
★★  hdr
★★  sand
★★  interceptors spring
★★  wix
★★  power filters
★  water softeners
★  paper filters
★  servlets
★  ionic breeze
★  prodigital filters
★  k&n
★  motorcraft fuel filters
★  slicers
★  passive filters
★  pleated filters
★  hoya
★  strainers
★  fram
★  bag filters
★  cartridges
★  gold filters
★  short pass filters
★  canister filters
★  black filters
★  stock filters
★  merv-14 cartridge filters
★  k&n filters
★  purifiers
★  b+w
★  white coffee filters
★  cartridge
  de
  gels
  napa filters
  permanent filter
  k&n air filters
  air purifiers
  brita
  car oil filters
  reverse osmosis
  pivot tables

Your alternative for filters is not listed? Suggest!
Speaking about filters, one probably shouldn't forget about joints.

Other search terms related to filters and their ratings are:
★★★★★ joints
★★★ black and white film
★★★ black and white photography
★★ bottles
★ blunts
★ ionizer
rectifiers
You have in mind a companion for filters and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of filters in all years. Click on graph for more.
filters
sand filters
cartridge filters