I hate to rain on your parade, but a laser is barely any better, if even as good as, any other form of removal or killing of unwanted 'stuff'. I've had 2 different lasers, a 2 watt and a 3 watt. And yes, I could start a fire on a 2x4 with the laser, no problem. A 5 watt may work a little better, but the power isn't the real issue.
I got them to use on aiptasia. It does work... sometimes. The problem is, if the aiptasia (or any other polyp) is in a hole, you need to get the laser beam to go directly in the hole all the way to the bottom. Otherwise the aiptasia just grows back in 3 to 10 days. And from outside the tank, I'd say about 50% to 70% of aiptasia are anchored where you can't get at the entire animal (inside the hole).
The short version is, fun to play with, but not really a solution. If you go to Reef Central and look, I started the first laser thread over there 4 or 5 years ago and I was just as enthusiastic as you are here. But in time, I learned that it just isn't all you think it will be.
