[Delphinus]

Can't really add much except to say that with perserverance you can overcome a cyano spike. When I've had cyano, the basic ingredients I've used in dealing with cyano seem to be: 1) increased water current, 2) increased skimming and/or reduced feeding, and 3) um ... dang I don't remember what the 3rd thing is. Siphon the stuff carefully, and with good tank management you will get over this. It will take a bit of patience, but just hang in there.

Sometimes lighting can be a factor, if you have an old bulb or a bulb of lesser quality, sometimes just replacing the lights can be enough to make things better.