I have been using this as per directions 3 drops per gallon morning and night to try and fight cyno. Has anyone had good or bed experiences with this product? So far I haven't really seen an improvement and the cyno is coming more rapidly. Presently I remove it by hand.I removed last night and now this morning its almost all back and I have a dead emerald crab which may be unrelated or not. My tank params are: 30 gallon 60 pounds LR 2 carbon filters (looking at skimmers today) 65 50/50 PC and a 10 watt (actinic NO) 2 false percs 1 mandarin goby 1 lawnmower blenny 1 yellowtail damsel 2 hermits 2 turbo snails 5 astrea snails 1 coralbanded 1 emerald (now was 2) some mushrooms, BTA, star polyps, toadstool, cauliflower & frogspawn. I feed a frozen mix usually every 2nd or third day and have bee using Kent phytoPlex and Coral accel.