Dino or other?

After reading Catjuggler's thread on using hydrogen peroxide to treat dinoflagellates (sp?) I'm wondering if that is what I have. Mine is a rust color vs the maroon color I had when I had a cyano outbreak. When I had the cyano it cleared up using chemiclean. THis time I treated it twice with no joy. Tried a different version as well with no joy. I turned out the lights for 24 hours with no impact. This picture is taken after a water change on Saturday where I sucked out as much as I could and scraped it off the rocks.

Parameters from Sat were
1.026 sal
Ph 8.1
Phos .08
KH 6
Ammonia 0
Nitrates 0-5, really wish there was a digital read for this
nitrite 0
Mag 1100 calcium 360

Fish and corals are healthy and happy, shrimp is fine, snails not so much. I got a cleanup crew order and a bunch of the tiny ones were DOA, the larger ones are slowly falling off rocks. I read that might be something that happens with Dino. It will roll off the gravel if I clean the glass quickly with the magnet but it doesn't blow off the rocks as easily. Lignts are LEDs that are on 7 hours a day with moon lights on a few hours either side of that.

I'm really thinking about trying the peroxide method as I'm not sure what else to try. Any input welcome.[attachment=2]DSC_0002.jpg[/attachment]
 
Your alkalinity is really too low. 8 to 11 dKH is the range to aim for. At 6, that could be part of the issue.

I don't recognize what it is, but you could simply siphon it all out until you can't see any trace of it. While it isn't a cure, you are reducing its volume in your system, which is a good thing.
 
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