Well I only did the second treatment for 24 hours. A couple of my LPS were looking particularly unhappy, and my two gorgonians shrivelled up beyond recognition. A few of my larger colonies also retracted 90% of their polyps by the morning of the third day so last night I did another large water change, changed my GFO, and fired up the skimmer. It went crazy for a few hours emptying directly in to a drain doing another partial water change on the tank, but by 10pm when I went to bed it had died way down so I did the first dose of MB7. I put half directly in the BP reactor, though I'm not sure how effective it will be recirculating in the bucket, and the other half in the display.
This morning I was able to turn the skimmer back up to almost where I used to have it set, and I added a mesh bag full of carbon to my filter sock to mop up the final traces of chemiclean and any organics that are floating around in the tank as a result of the treatment. I also did the second dose of MB7.
As of this moment, my sand is as white and sparkling as the day I put it in, and there's not a so much as a speck of cyano or dinos anywhere in the tank. Once the skimmer has had a chance to get back to normal I'm going to do another round of sand bed cleaning in the places the cyano used to be the worst. Here's hoping I've licked this problem for a while at least.
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