Bio-pellets I quit you!

[whatcaneyedo]

Same here. I keep quite a diversity of coral in a heavily fed, aggressively skimmed system. I was just hoping that I could use them instead of GFO to keep the phosphate in my system undetectable. So I tried the minimum recommended amount and then even less a second time and each time many of my soft coral began to bleach within a few weeks and my sandbed started to get covered with cyano. I can think of two things that I may have done wrong that might at least in part explain why they didn't work for me. The first was that the reactor output probably wasn't aimed well enough towards my skimmer's intake. The second was that I have not had detectable nitrate in several years. From what I've read they consume 4:1 nitrate to phosphate. But to me this still doesn't explain why 100ml of Vertex pellets would begin to kill off some of the coral in my +200gal system.