Found the Queen Hydroid Hive.
Hey "Organism", many thanks for the words of encouragement, inspiration to tackle the Hydroids, Sooner rather than Later.
Since I am off this week I had time to tackle this long overdue Hydroid War.
I worked on a few small rocks and it wasn't much of a task plucking them clean.
However when I remove a recessed rock in the middle of the rock scape it was totally infested with Hydroids. It isn't going back in for a while.
I soaked it in Vinegar, but not too long as to dissolve the rock.
Now I'm soaking it in fresh water.
I'll blowtorch and scrub it clean and kill the rock, till someday when I want the piece.
At least this buys me some time till the summer when I can do a better job.
So after the best I could do effort, I put back the rock and corals, since family will be over for Christmas.
Since I had the corals out, I did some tidy up putting them back.
I like the layout and coral placements better.
Thank again.