Dividing Bubble Tip question

[KPG007]

I have a rose bubble tip anenome that got as big as a dinner plate. It was in my 150g tank that was having huge issues, mainly with hair algae. I finally got around to pulling all the rock out, scraping it all off, doing about a 80% water change and changing out all the carbon and GFO. It's been about a month and I've done additional 20% water changes every couple weeks. Tank is looking much better and to top it off, the bubble tip finally split about a week ago! Now the question. One of the two halves went down on to the gravel tank bottom, so I scooped him out and tossed him into my sump to sell. The sump has a low flow and is filled with macro algae. It was in a quiet corner for all of 2 days when today I noticed it split again (incidentally, the day after another water change)! All the anenomies look fine and healthy, all are all in the same water. Is it a bad sign when anenomies split that quickly? As I said, it was quiet a large one before it started spliting, and the water conditions are much improved.