For the past few days, my zoanthids have been all closed up, my leathers have shrunk up, and I have been getting more and more cyano (presumably) over the past few days. My crabs and snails have mostly stopped moving over the past week (but the shrimp are fine). I am trying to narrow down what exactly I have done wrong. If this is not red cyano bacteria, please let me know. Water paramaters are as follows Temperature-78.5 (stable) Salinity 1.025 (recalibrated to make sure) DKH-9 (usually about 7) PH- 8.2 Nitrates (undetectable) Nitrites (undetectable) Ammonia (undetectable) Basic tank setup Max-E170 (40 gallon tank) with aquafuge 2 refugium, carbon, skimmer, ATO, and IceCap1k gyre (running at 10%). I dose Iodine 1x per week and put in 1 teaspoon of Kalk per 5 gallons of ATO. Tank is 4 months old with 5 months old live rock (dead shrimp method). Up until 2 weeks ago, the tank was stable. 2 weeks ago I bought a toadstool leather and a sebae anemone. I had difficulty getting the anemone to mount and drastically reduced the flow by turning off the Icecap 1k gyre. After a week of difficulties trying to get the anemone to mount, I took it back to the store so I didn't kill it. I tried to feed it a few times during this time. I exchanged it and paid a little extra for a finger leather coral, 2 feather duster worms, 2 scarlet leg hermits, and a bottle of Strontium & Molybdenum. My troubles started (I think) when I put my new goodies in and dosed Strontium & Molybdenum (1 cap full) and turned my gyre back on. I have also had an inconsistent experience with the brightness of the light in my fuge. Fish seem to be happy. I am thinking hard and can only come up with a few possible issues that may be nuking my tank. 1. Strontium & Molybdenum overdose? 2. Too much flow? 3. Something unseen came in on the new acquisitions? 4. DKh is slightly higher than normal at 9 vs 7. 5. Fuge light being inconsistent could cause issues? 6. Corals unleashing chemical warfare on tank contents? The only thing I can think of to do now is to do a 5 gallon water change every day for the next few days until things calm down. I would appreciate any thoughts you may have.