These are excellent replacement filters for my fountain. You get 4 filters for a really good price. I get 5 microns as my good man recommended and it does a good job of filtering out the sediment. Just a side note for those who don't know: the lower the micron number, the more particles are filtered out. The 5 micron filter filters out particles as small as 5 microns. The 10 micron filter filters out particles as small as 10 microns. That way, less gets through the filter and into your water.
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