Ya, I watched the video on youtube. It didn't seem like it would work well unless you had enough flow rate and even then, putting electricity on a pump might run the same as water. Water here is cheaper than electricity in terms of how much I get out of what I use. I run a RO in my house to save the gas to the water well where its 30 cents a gallon. The $90 for filters comes back pretty quick in terms of the cost of gas to get a water change done or worse yet, take care of a hazard. It just didn't seem cost effective for what I would get out of it.
Having read this thread, I think I would try to setup a planted aquarium to the side and use it as a sump before my filter sump if that makes sense. Chain them to run from the main tank to the plant aquarium to the sump and back again. I got a feeling my fish would eat if not at least destroy the plants in the tank. My plan for the tank is to take everything out of it. I heard Pacus destroy heaters after I lost my first two and he hasn't proved otherwise. He killed and ate my intake tube to my OTR as well. That was a good week.
Maybe there are more suggestions out there for aquaripure after 9 months?