frogspawn taken up sewing?

[Seamonkey]

Dumb title, but it got your attention.
Hi everyone,
I was wondering if anyone can tell me what's going on with my frogspawn. I have noticed some white thread like stuff coming out of some of the bubble tips. It appears healthy, has grown a lot since aquiring it 8 months ago. The only thing now is it may be getting a little crowded and rubbing up against the glass.
Toni