Hi meagheavz ;-)
Keep calm and believe that you are going to solve the problem
...we know you can and will solve the problem and we believe in you (I just wish I was living closer and those
arthVadeiptasia would be history by now...)
There is another way that I did not mention previously but it works, especially when you deal with rocks that have some corals attached. Its very simple and effective as I could experience and is used when you have to very precisely aim the action and avoid damaging anything else or disturb the water parameters, and KathyC already gave you part of the treatment, which is, selecting one rock at the time, take it out and put it in a bucket filled with your tank water but instead of using Kalkwasser solution, in this case you will use an old knife and fire....
1st - Select one rock with corals attached, and only one!
2nd - Select a container which you know will provide enough room for both you to operate, meaning grab the rock, pull it out and place it back without damaging any corals.
3rd - Choose and cheap old steel butter knife or meat knife, depending on the precision you have to use (maybe both and the reason for it to be old is because you could damage it in the process)
4th - Light a fire or simply use a a cigarette lighter (and don?t burn your fingers in the process:irked::Blurp
5th - Light the the cigarette lighter and place the blade of the knife on top od the blue flame, as this is hotter than the yellow part of the flame (30 seconds to a minute should be enough)
6th - Once the heating time has elapsed, turn off the lighter (watch where you put it down as it will be very hot) and pick up the rock and position the hot, or red hot blade on top of the Aiptasia for some 5 seconds, after which you put back the rock in the bucket. Repeat the operation for every Aiptasia and try not to exceed 30 minutes in this operation.
7th - Pick up the rock form the bucket and clean with tank salt water the places where you melted down the Aiptasia.
8th - After cleaning as per 7th, put the rock back in the tank.
proceed like this progressively, rock by rock, until you are satisfied with the result. You will be preserving the biological life and capacity of the rock, and you will also eradicate the
arthVadeiptasia
I've done this procedure some times when needed and it is effectively terminal.
Please keep us updated
Cheers
Pedro Nuno ;-)