Today I show you how to make a k1 kaldness media filter out of a 2 liter bottle. Using a soldering iron, some glass beads and some media it takes about 10 minutes to make one. You’ll need an air pump, air line and an air stone.
Supplies:
Kaldness Media: https://amzn.to/1Oplbrd
Glass Beads: https://amzn.to/1RIbHHY
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Post time: Jun-18-2017