ULNS - Denitrators

[kien]

Originally Posted by reefwars

personally i think low range is good enough for what most of us want to do

he speaks the truth! In fact, I recall reading that the ocean reefs do not operate in a truly Ultra Low Nutrient environment like we often try to achieve. That is, they have measurable nitrates! The reason we do it is so that we starve out the browning zoanthellae within the coral so that they eject them. This results in paling. To counter this you have to feed them with amino acids and various other supplements to maintain colour. It's a very delicate balance act. Stave them then feed them just enough so that they look super awesome. Many corals in the ocean reefs are naturally not as colourful as what we see in ULNS reef tanks.