I own a Deltec NFP509 and NFP512 Denitrification Reactors and I'm wondering who else is running them as well and what has been your experience on them? I have only heard that David Saxby used them on his aquarium to deal with nitrates. It would be cool to connect with others owners to get and share the experience with owning and operating them. Would be nice to know what pumps people are using to feed the reactors, what the inside of the reactor looks like after months or years in operation, etc.
