I tried that already, but to no avail.
As you can see, I started this thread a while back. The shrimp could care less about the aiptasia (fish food must be tastier!). I tried the boiling water... I think by the time I reached the aiptasia with the syringe it had cooled enough to be ineffective.
So the kalk sludge is my last hope in getting rid of it.
When I first posted this thread, I only had one little tuft of it. Now it has multiplied and there are 5-6 tufts. That's pretty quick multiplication! I'm waging war!