The micron rating for our FilterFirst pads has not been tested. However, our polishing pads have been tested and are rated at 50 and 100 & 200 microns.
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What is the micron size for pass-through on the FilterFirst pads?
Aquarium Filter Pads
What is the micron size for pass-through on the FilterFirst pads?
Last updated on 03 Nov, 2025