I have been fighting Cyno for about 2 months. My system is 2 years old, but it is a broodstock system, and I feed 5 times a day. I added a waterfall scrubber about a year ago and I have no algae problems, but cannot get rid of cyno. Most of the advice I see says reduce nutrients. How????? I thought the ATS would also help with cyno, but not so far. What have others seen or done?