Thank you for providing this great video, but nowhere in it says that this kind of filter doesn't produce nitrates, just that is used to purify waste water, which normally means removing toxic substances like ammonia and nitrites to make water safe to use and drink. That does not mean this water is ideal for reef tanks, especially corals. Also tumbling the media removes dead bacteria that is cause of ammonia not nitrate. If you further research nitrogen cycle in reef aquarium, you will see that nitrates are not produced by dying organic stuff but ammonia is. Therefore bacteria strain develops on surface and consumes ammonia and convert it in to still toxic nitrite. Another bacteria strain again living on surface and needing oxygen consumes nitritie and convert it to nitrate which is not toxic to people and fish unless in very high levels ( test you drinking water, there is a lot NO3 in it ). This K1 media is an excellent place for those two kind of bacteria to grow on it, but... to break down nitrates to harmless nitrogen gas another strain is needed that lives in low oxygen levels areas ( anaerobic), like deep sand bed and inside LR. It is not present on surfaces. K1 media doesn't offer this kind of area for this bacteria, therefore IMO that's where this whole process stops. This kind of filter is great for reducing ammonia and nitrite, but I question its ability to remove nitrates that are produced by nitrite consuming bacteria. I am not here to argue, but I have conserns over effectiveness of this media in REEF tanks. As you see, this been around for a while now, and for some reason it did not found its way in to our hobby. ( I wonder why ). It is great that Mike is using this, so we can learn more from his experience and hopefully it works, but mine concern is based on scientific fact of nitrogen cycle in saltwater, and I wouldn't just blindly believe it solves our problems in REEF tanks. I will be waiting for more updates from you Mike, and hope that this really works. After all we want what's best for our little piece of ocean, right?
