I have been searching this alot, and it seems everyone who starts one never fallows up on their progress. Inland aquatics uses a turf scrubber on a dump system, and say that coupled with a DSB allows them to do a 5% water change a year. I still would want to do water changes to add trace elements, however, I also like the idea of not doing so many changes to fight trates and algae. So is there anyone out there that uses one with good results over a long period of time, and pics too please!?