As you can see in my photo 2 pounds of Biohome can fill up to 2 trays of my Fluval 407 when placed vertically. The ceramic bio rings that come with Fluval are significantly smaller. So I just used bio rings to complete 2 biohome trays. I used coarse and fine buffing pads in the bottom bowl, then Biohome and ceramic rings in the next 2 bowls, then finally Purigen and Poly-fil in the top bowl. My water is crystal clear! Even after I put the driftwood in, it sucked out the tannins overnight :) As for the cycle of my new 55 gallon fishless aquarium, it took me almost 1.5 months to complete a cycle. While it may be expensive, I'd say it's worth it in the long run :)
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