Woo Woo double post!
What if you powerhead your LR before you put it into QT tank while your display is cycling and see if any grow on it?
From WetWebMedia:
Riding Out a Neomeris Algae Bloom
Hello,
<Hi! Scott F. here this evening!>
I have a 125 gal. reef that in its beginning, I added some lace rock at the recommendation of an aquarium shop where I live. It seemed to introduce the Caterpillar weed (Neomeris annulata) algae. I crop it to get rid of it, but it accumulates rapidly. I have tried yellow Tangs, Scopas, and yellow eye tangs. None seem to eat it snails and crabs also stay away. Do you have any recommendations to get rid of it? Thank You. Shawn
<Well, Shawn, this algae tends to be difficult to eradicate, as you have suggested, and few herbivorous fishes will touch the stuff, as you are now aware! I think that this species is infinitely more "desirable" (ok, make that "tolerable") than the disgusting Bryopsis, or other nasty algae. They are actually kind of interesting, as their thalli contain calcium-sort of like an ugly version of Halimeda, if you will. In my opinion, the best way to get rid of this stuff is to do what you've been doing- yank out what you can, and ride out the "invasion". These algae tend to disappear once the tank gets more established, and less abundant supplies of nutrients are available to them. Of course, other algae will arise to take their place once things get going, so an ongoing nutrient control/export program (i.e.; water changes, use of chemical filtration, protein skimming, and general good husbandry techniques) will really help you reduce or eradicate future nuisance algae growths. Be patient, hang in there, and you'll see these fuzzy little algae start to disappear. Good luck! Regards, Scott F>