OK, now I heard a new one. A fellow tank keepers is now telling me that I should only dose my corals with Phytoplankton twice a year. He also told me that since he has stopped using DT's Phytoplankton his notrates are now ZERO. Mine are usually around 5 and just before the water change time they may be at 10 but never higher. He says that its because of using the phytoplankton. I only feed twice a week, and since I only have a finger leather and a small pos of zoo's I use about 7ml of them mixed in with my water. I have never had problems with cloudiness and I dont think 5ppm on the nitrates is to bad. Am I wrong here? they heard this from some expert, but I have never heard of feeding only twice a year, but then again I dont know everything.