[MikeM]

Arthur: Yes, Thom posted about his experience on another board about a year ago and was going to provide an update after further experience. I've not seen one. At the time his plant filter had been in operation for over a year. He was measuring reduced nitrates from the outflow, however, his nitrate levels are so low that most pondkeepers could not detect the differences with their test kits. As I recall, he was using a lot of reeds. Older stems were removed regularly. He did not have any sediment build-up whatsoever. It would be interesting to learn what has occurred over time.

Those not familiar with the Blischok pond should understand that it is probably the true state of the art in the world, with huge water exchange occurring continually and based on "manufactured" water.... RO water "re-built" to have every mineral component and parameter precisely as desired, and computer monitored so that nothing occurs without being tracked.