Brown Spot Algae - Hard to Remove

I'm not sure that pH and aeration are that critical - this stuff LOVES light and flow. My tank is infested with it. I have a very good amount of water surface agitation with an open top 65g, a 20L sump with a skimmer and two baffles that water is flowing over at about 800gph. My pH is very stable between 8.1-8.2 (ATO with Kalkwasser and I check the graph on my Apex frequently to see what the trend is).

I think the stuff is just evil. :( Even my hermit crabs' shells are encrusted with it. I need to find them a new home but I can't in good conscience give this plague to anyone else.

I added 3 Sally Lightfoot crabs yesterday in an effort to eradicate it. I have a rock wall so removing rocks isn't an option. I think my trochus at least try to eat it, but can't rasp it entirely off (nor can the sea hare added to try to control it as well). Seems some people have had success with the Sally Lightfoots and they do seem to be eating it.

I guess we'll see... my poor tank is covered with the stuff, by the time I realized what it was it had already taken over.

Any update on dealing with this Lobophora?
 
I have this stuff too. Loves high light and flow impossible to scrape off nothing touches it. My ph is at 8. Nitrate phos 0. Anyone figure out the cure???

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