I just picked up my first packs of the food on Thursday. Long story short I added some fish and a bunch of my wrasses just became listless, essentially lieing on the sand not moving. Not a spot of ich or velvet on them, not breathing hard, just sitting there. I thought it might be bacterial, so I picked up some of the food and have been feeding it twice a day ever since. The fish have recovered nicely, but I am not sure if it is a correlation/causation thing. The food itself remind me a lot of Rods which is good because that is about all I feed.