I treated my tank with a new product called Red Slime Control by Blue Life USA.
A few noteworthy things from today:
The copperband butterfly is still doing well, and was out briefly a few times. Looks like it got a few featherdusters, but the aiptasia population seems unchanged in the back of the tank. I'm hoping it will become more and more courageous, so that it can cruise the reef as it wishes.
While studying the 55g closely, I found new growth of the blue Milleopora on the LR it had been touching until recently. I think the sand shifted and caused the rockwork to move somewhat, and the colony no longer is in contact with that spot, but it looks like I may get a separate colony one day. As of now, it is about the size of a dime or less, but the color and the hair-like polyps are unmistakeable.