I used to use varous coral foods and most times IMHO it was a waste of time and money. Phyto etc does nothting but add junk in the water. Just read the labels and it will tell you its not live organisims that critters are looking for. The way goods are shipped and stored and handled its risky thinking anyhting is going to be stored and shipped in the required range of conditions needed for it to be suuitable. I feed my shrooms, polyps etc pelleted feed by spot feeding with a device I made, 3 to 4 times a week, same for sun corals, use spot feed of pelleted feed or locally prepared frozen food etc, and all else gets what they require from water changes and minut particles in the water after /during regular feeding of fish with frozen foods etc....they all do so much better without adding those liquid supplemental feeds.