Which biofilter media is better? K1 or chips? Part 1.

I’ve just been sent a sample of new fluidised bed filter media, called chips (pictured below, right). They are wafer-thin, lightweight, plastic discs, with minute pores and are slightly positively buoyant.

How does it compare with K1?
K1 is an established filter media that is shaped like cart wheels and are slightly positively buoyant (pictured below, left).

Well, I’ve setup a rough experiment comparing the two.

2L chips
2L K1
2x 20L buckets
2x 10L water
2x 400mg ammonium chloride
2x aeration
2x bucket lids

I set each bucket up with 10L of water, ammonium chloride, aeration and the biomedia.
I then periodically perform water quality analysis, measuring ammonia, nitrite, pH and temperature, logging these into a notepad.

See part 2 when it becomes available (approximately 4 weeks’ time).



3 thoughts on “Which biofilter media is better? K1 or chips? Part 1.

  1. Oh look forward to this one. The K1 is known to take a few weeks to get a bio film as it has a silicone skin which is there as a result of the manufacturing process. Will this make a difference?? AB


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