Originally Posted by Pleasuredeal
I bought one a year ago. I followed all the instructions. I contacted supplier who sent me new bacteria to restart. Still did not reduce nitrates. I just gave up. I will try an ATS (algal turf scrubber). Seem a lot more promissing, easy to DiY, and cheap. Suggest you research ATS before you spend money on Aquaripure.
I had trouble with the filter performance as well, however like any living culture it can't be used mechanically. Some basic chemistry and micro biology research was required. Basically the bacteria that removes (actually breathes nitrates) requires anoxic conditions in the filter. In order to maintain these conditions you have to have enough bacteria in the filter to remove enough oxygen from the water. The denitrifing bacteria culture "eats" organic carbon and if the tank is low in DOC
for whatever reason the filter will not be able to maintain stable bacterial culture. I can describe how I tuned mine, but it would make it for a very long post. The short answer is that it works and actually works better than some of the much more expensive models primarily because of the media. Denitrifying bacteria dies like all the living things and eventually clogs up the filter. In the case of aquaripure, the filter itself is pressurized so the dead mucus can be ejected by opening the valve completely. Other carbon based nitrate filters on the market require period media removal and cleaning.
Let me know if you need more detailed information and I will be happy to provide it.