I bought a couple of these when my order for sea hares got canceled due to lack of supply at liveaquaria. They have done a very good job on my hair algae but I have been about ready to kill them. I took about 2 years to get a good looking build up of coraline on the back glass of my tank. And the sob's are peeling it off in big chunks. Looks like a mess again now. I know there are worst things to complain about but I was a little peeved the first moring the lights came on and there were three big holes in the back of my previously purple back glass.
Sorry had to vent a bit. :?
Sorry had to vent a bit. :?