Well lets add this to the mystery of the Pulsing Xenia.

My current 100g tank that hs been set up for about 10 months now has a few different types of Xenia in it...several colonies of elongata and a few of pom-pom. The elongata have been in my tank since the beginning. They pulsed like crazy for about 4-6 months and looked very healthy. Note that I started out skimmerless for the first 3 months. Most of the elongata stopped pulsing about 4 months ago and some of them have died off. The surviving colonies dont really pulse at all they just sway with the current, otherwise they look healthy. The pom-pom that I have I got from captexas I guessing three months ago or so have multiplied rapidly and have pulsed the whole time.

Ok now...I removed my skimmmer from my 100g last week so I could use the pump for large scale water mixing for my 240g. A few days ago it seems that the elongata have perked up considerably and started pulsing like crazy again. To top it off the pom-pom seems to have slowed!

Now I am really confused

I reaaly don't have a question here, just thought that I would share.