Give it some more light and flow. Becareful with the flow. Not because it will harm them, but because they seem to do well with high flow (at least mine do). And if they are doing well they can quickly cover a large area. A much larger area than you may wish. These things are like xena. They can take over an area if you are not careful.
I've never tried aiptasiaX, but I didn't think you had to inject it. I thought it was pretty much the same product as Joe's Juice. If so, you just eject it out of the dull syringe over the top of the oral disk. Too much risk if you inject them. They can eject planula (read aiptasia "seeds") if stressed. Better to cover the oral disk, stopping the planula, and killing the entire thing at once.