I have a 265 gallon. Been running for a while. Got some green hair going on, slowed up feeding, and snails and crabs are doing there job and I am on the back end of it now. Now that all the algae that was lower on the rocks is no longer there, I can see some Aptasia. Had it for a little while and been doing a good job getting most that were visible with Aptasia x. I noticed some lower, so I bought one of those Wands, Peace of junk. I wouldn't recommend it. It works maybe 25% of the time and you have to be right on the pest. Most suck in before you can get them and if you go in the hole they pulled in on, sometimes it works but most of the time an hour later its back out and you just wasted your time. Got a file fish about a month ago, not really doing his job. I dont think he got any yet. I say that because the unreachable ones are still there and growing. I threw about a dozen peppermint shrimp in a few weeks ago too and same. Not a lot happening. So that leads me to the Laser. I see a lot of posts about them. I see the danger in them, and also people saying that they dont work either(guessing its the make and power that determine that). Anyway, there isn't a place to just buy one that I can be sure does the job. The people on here that say they use it effectively either built there own, someone built it for them, or they bought it on Ebay, and when I click a link they show, it no longer exists. does anyone have and experience they can give me and possible a place to buy one strong enough to do the job?